41. Magnetic Properties And Metals Ask A Scientist. Physics Archive. Magnetic properties and Metals. Thursday, August 22, 2002. name Stephanie E. status other age 30s http://www.newton.dep.anl.gov/askasci/phy00/phy00556.htm

Ask A Scientist Physics Archive Magnetic Properties and Metals Thursday, August 22, 2002 Back to Physics Ask A Scientist Index NEWTON Homepage Ask A Question ... NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators. Argonne National Laboratory, Division of Educational Programs, Harold Myron, Ph.D., Division Director.

42. IEEE MAGNETICS SOCIETY DISTINGUISHED LECTURER FOR 1997 IEEE MAGNETICS SOCIETY DISTINGUISHED LECTURER FOR 199798. Modeling Magnetic properties of Materials. by Professor David Jiles. Abstract. http://yara.ecn.purdue.edu/~smag/distlect/jiles.html

IEEE MAGNETICS SOCIETY DISTINGUISHED LECTURER FOR 1997-98 Modeling Magnetic Properties of Materials by Professor David Jiles Abstract. Biography. David C. Jiles Ames Laboratory Iowa State University Ames, Iowa 50011 Phone: 515-294-5655 Fax: 294-8727 email: gauss@ameslab.gov Please contact Prof. Jiles if you would like for him to speak to your group.

43. Many-Electron Atoms - The Magnetic Properties Of The Electron The Magnetic properties of the Electron So far, the only motion we have considered for the electron is a motion in threedimensional space. http://www.chemistry.mcmaster.ca/esam/Chapter_4/section_2.html

An Introduction to the Electronic Structure of Atoms and Molecules Dr. Richard F.W. Bader Professor of Chemistry / McMaster University / Hamilton, Ontario Preface The Nature of the Problem The New Physics The Hydrogen Atom Many-Electron Atoms Introduction The Atomic Orbital Concept The Magnetic Properties of the Electron The Electronic Basis of the Periodic Table Further Reading Problems Electronic Basis for the Properties of the Elements ... Table of Contour Values The Magnetic Properties of the Electron So far, the only motion we have considered for the electron is a motion in three-dimensional space. Since this motion is ultimately described in terms of an orbital wave function, we term this the orbital motion of the electron. However, the electron may possess an internal motion of some kind, one which is independent of its motion through space. Since the electron bears a charge, such an internal motion, if it does exist, might be expected to generate a magnetic moment. We have previously pointed out that when an electron is in an atomic orbital for which l is not equal to zero, the resultant angular motion of the electron gives rise to a magnetic moment. We would anticipate then that an electron in an

44. Topic: Magnetic Properties And Materials Condensed Matter Electronic Structure, Electrical, Magnetic, And Optical properties , Magnetic properties and materials,. http://topics.aip.org/75000.html

Current Topic: Magnetic properties and materials PACS Subject Classification Tree Condensed Matter: Electronic Structure, Electrical, Magnetic, And Optical Properties Magnetic properties and materials Calibration of magnetic force microscopy tips by using nanoscale current-carrying parallel wires. Th. Kebe and A. Carl J. Appl. Phys. (3) 775 (01 Feb 2004) Spark-eroded particles: Influence of processing parameters. J. Carrey, H. B. Radousky, and A. E. Berkowitz J. Appl. Phys. (3) 823 (01 Feb 2004) Transport and stability properties of the charge ordered state for Sm x Ca x MnO x T. Qian, G. Li, Q. Han, X. Y. Guo, Y. Liu, J. F. Qu, and X. G. Li J. Appl. Phys. (3) 977 (01 Feb 2004) Magnetotransport properties of hard magnetic pinned multilayers. J. Appl. Phys. (3) 1211 (01 Feb 2004) Exchange coupling in a half-metallic and hard-magnetic Fe O Susumu Soeya and Hiromasa Takahashi J. Appl. Phys. (3) 1323 (01 Feb 2004) Structure, magnetic, and transport properties of the perovskites Bi Ca Mn x Cr x O C. M. Xiong, J. R. Sun, R. W. Li, S. Y. Zhang, T. Y. Zhao, and B. G. Shen J. Appl. Phys.

45. Topic Magnetic Properties Of Nanostructures Condensed Matter Electronic Structure, Electrical, Magnetic, And Optical properties , Magnetic properties and materials, Magnetic properties of nanostructures http://topics.aip.org/7575 .html

46. Digital Measurement Systems - X9 Magnetic Properties Analysis System X9 Magnetic properties Analysis System. Benefits Unsurpassed Vector Performance; High Field Capability; UltraHigh Moment Sensitivity; http://www.dms-magnetics.com/X9.shtml

Products: Select by Application Magnetics Anisotropy Disk Media/HDD Easy Axis Dispersion Head Wafer Testing Hysteresis Meas. Magnetic Characterization Magnetic/Time Decay Magnetic Head Testing Magnetic Inks Magnetic Mapping Magnetic Powder/Liquid Magnetic Tapes/Cards Magneto-Optic Meas. Magneto-Resistance MRAM Permanent Magnet Perpendicular Recording Process Control Rock Magnetism Temp. Dependent Meas. Torque Meas. Vector Meas. Viscosity Dimensional CD Stamper Thickness Disk Drive Motor Test Disk Thickness Fast Tool Servo Focal Plane Control General Lab Tool OEM Applications Piezo Actuator Control Servo Control Thickness Measurements Thickness(non-conductor) Vibration Analysis Vacuum Measurements Surface Mapping Binary Optics Biomed Optics Flatness, Transparent Flatness, Reflective Disk RVA Duboff Analysis Laser Texture Analysis Mag Head PTR MEMS Optical Flats Profilometer, Optical Radius of Curvature Rolled Sheet Analysis Step Hght Analysis Vacuum Optical Testing Wafer Nanotopography Wafer Flatness Wavefront Transmission Waveguide Metrology Divisions: Go to a Division ADE Phase Shift ADE Semiconductor ADE Software ADE Technologies - NonContact Gaging ADE Technologies - Magnetic Metrology ADE Corporation Products: Select by Name Magnetics VSM Model 10 VSM Model 4 HF VSM Model 880 VSM Model 8810 VSM Model 886 990 Torque Magnetometer Temperature Control (VSM) MR Option (VSM) MRAM WMS M2 DiskMapper Wafer Mapping System Polar Kerr System X9 Magnetic Properties System Dimensional Microsense II 6360 CD 3700 FFT 5130 OEM Module 3800 OEM Module Series 5000 Probes Series 2800 Probes

47. Materials By Design: Magnetic Properties Of Materials Temperature, stress and impurities can all affect magnetic properties and play an important role in using these materials for engineering applications. http://www.mse.cornell.edu/courses/engri111/magnet2.htm

Types of Magnetism Paramagnetism If the magnetic moments of the atoms are random, we say that the material is paramagnetic . The magnetic moments from atoms do not interact with each other at all. If an external magnetic field is applied, the magnetic moments are free to align with the field. Ferromagnetism If the moments interact to cause each other to align in the same direction, they are called ferromagnetic . Iron, cobalt and nickel are ferromagnets, as are the magnets on your refrigerator. Antiferromagnetism If the moments interact to cause an alternating pattern such as in manganese, the material is said to be antiferromagnetic Ferrimagnetism Some materials have different types of atoms with different moments, which interact. For example, Fe O has both Fe and Fe atoms with correspondingly different moments, which are located at different sites within the structure. These cause ferrimagnetic behavior, because some of the moments are canceled by other atoms, but some are not. Temperature, stress and impurities can all affect magnetic properties and play an important role in using these materials for engineering applications.

48. Magnetic Properties Magnetic properties. 3. Material properties magnetic properties of minerals can be exploited during ore processing to help separate/beneficiate minerals. http://www.gly.uga.edu/schroeder/geol3010/magnetics.html

Lecture notes for GEOL 3010 Klein and Hurlbut (21 st Ed) p. 179, 270-274 Magnetic Properties Mineral magnetism and it applications to geology. Mapping - magnetic anomaly surveys are used for geologic mapping and they are a tool for ore deposit prospecting. Plate Tectonics - paleomagnetism is the principle field of study that has helped place the positions of continents and ocean floors through time. Stratigraphy - magneto-stratigraphy helps the correlation of sedimentary beds in basins and constrain sedimentation rates. Material properties - magnetic properties of minerals can be exploited during ore processing to help separate/beneficiate minerals. Source of magnetic properties. Magnetic properties originate from the spin properties of electrons. Where, n = volume, I = shape, m = orientation, s = spin directions. The figure below shows the directional characteristics (I) of the first three electron shape regions. Pauli exclusion principle - no two electrons in an orbital can have the same four quantum properties. This effectively limits each orbital to only two electrons. The spin properties of electrons that surround atomic nuclei are responsible for magnetic properties of a mineral. Each electron has the property of spin. Because an electron is charged, as it spins, it creates a magnetic field. This is somewhat analogous to creating a magnet by letting electrons flow through coiled wire.

49. Session F17 - Magnetic Properties, Anisotropy And Thermodynamics. Session F17 Magnetic properties, Anisotropy and Thermodynamics. F17.003 Magnetic properties and magnetic anisotropy of pure and doped YCo_5. http://epswww.epfl.ch/aps/meet/MAR02/baps/abs/S2170.html

50. High Performance First Principles Method For Complex Magnetic Properties High Performance First Principles Method for Complex Magnetic properties. High Performance First Principles Method for Complex Magnetic properties. http://theory.ms.ornl.gov/~gms/G_Bell/

High Performance First Principles Method for Complex Magnetic Properties B. Ujfalussy, Xindong Wang, Xiaoguang Zhang, D. M. C. Nicholson, W. A. Shelton, and G. M. Stocks, Oak Ridge National Laboratory, Oak Ridge, TN 37831, - A. Canning, NERSC, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, - Yang Wang, Pittsburgh Supercomputing Center, Pittsburgh, PA 15213, - B. L. Gyorffy, H. H. Wills Physics Laboratory, University of Bristol, Bristol, UK. Abstract: The understanding of metallic magnetism is of fundamental importance for a wide range of technological applications ranging from thin film disc drive read heads to bulk magnets used in motors and power generation. In this submission for the Gordon Bell Prize we use the power of massively parallel processing (MPP) computers to perform first principles calculations of large system models of non-equilibrium magnetic states in metallic magnets. The calculations are based on a new constrained local moment (CLM) model that places the recently proposed Spin-Dynamics of Antropov et al.

51. M4 Home Page A major focus of our research is to establish the microscopic foundations for the relationship between technical magnetic properties and microstructure We http://theory.ms.ornl.gov/~gms/M4home.html

Project Outline Goals and Approach To develop a machine independent massively parallel software environment for performing classical and quantum simulations of materials properties on microstructural length and time scales. Classical Molecular Dynamics (CMD) Tight-Binding Molecular Dynamics (TBMD) Iterative Pseudopotential (IP) method Ab Initio Locally Self-consistent Multiple Scattering (LSMS) Method System size: CMD >10,000,000 atoms(~3x10 m); TBMD >20,000 atoms (~0.5x10 m); Ab Initio >250 atoms (~0.1x10 m) Class of materials to which they can be applied Type of physical phenomena that can be studied Perform fundamental studies of the atomistic, electronic and magnetic structure of microstructural defects in metals and semiconductors and relate these to the strength, ductility, transport and magnetic properties. Compositional inhomogeneities and lattice relaxation in alloys. Grain boundaries in metals and semiconductors Dislocations in metals and semiconductors Interfaces in magnetic multilayers Develop spin dynamics as a fundamental theory of the magnetic properties of metals and alloys.

52. New Scientist A family of siliconbased semiconductors that exhibit magnetic properties has been discovered, paving the way for spintronic computer chips that are http://www.newscientist.com/news/news.jsp?id=ns99994801

53. Magnetic Properties Of Transition-metal Multilayers Studied With X-ray Magnetic IBM Journal of Research and Development 421 - GMR, oscillatory coupling, and related studies Magnetic properties of transition-metal multilayers studied with X http://www.research.ibm.com/journal/rd/421/stohr.html

Home My account Select a country Journals Home ... Contact Us Volume 42, Number 1, 1998 GMR, oscillatory coupling, and related studies HTML ASCII This article: HTML ASCII Magnetic properties of transition-metal multilayers studied with X-ray magnetic circular dichroism spectroscopy by J. and R. Nakajima 1. Introduction ] in multilayers achieved by alternating magnetic and "nonmagnetic" metals. Some of these discoveries are expected to have a major impact on information technology. Several potential applications are shown in Figure 1 Fe Figure 1 , the bits in magnetic recording media are typically magnetized "in-plane," while the magnetic flux experienced by the head is in the "out-of-plane" direction. A current flowing through the spin-valve structure experiences a resistance which depends on the relative orientation of the magnetization directions in the two ferromagnetic layers. This change in resistance, of the order of a few percent, is the origin of the sensor signal of a spin-valve magnetic recording head. Spin-valve-like structures also promise nonvolatile alternatives (the information is stored in magnetic bits which survive power failures) to semiconductor-based dynamic random access memories (DRAMs) [ ]. The magnetic random access memory (MRAM) cell shown in the figure has a spin-valve-like structure. The memory bits consist of parallel or antiparallel orientations of the magnetization directions in the two ferromagnetic layers. A bit is written by the magnetic field of a current flowing through a lithographically created adjacent "wire." The memory bit is read by a current flowing through the cell, as in the spin-valve read head. As indicated in the figure, many of the materials of technological interest are in the form of artificially layered structures, each layer consisting of a different metal, a few atomic layers thick. Because of the complexity of the materials and the small concentration of some components, state-of-the-art characterization techniques are needed to address scientific and technological issues.

54. Materials Faculty At UC Irvine Studying Optical/Electrical/Magnetic Properties O Materials Faculty at UC Irvine Studying Optical/Electrical/Magnetic properties of Materials. Nancy Allbritton Physiology Biophysics http://www.materials.uci.edu/research/persp_opt.htm

Materials Faculty at UC Irvine Studying Optical/Electrical/Magnetic Properties of Materials Nancy Allbritton , signal transduction, kinases, capillary electrophoresis, single cells, microfluidics devices Vartkess Apkarian [Chemistry] , photophysics, photochemistry, nonlinear optics, quantum matter, many-body interactions Zhongping Chen [Beckman Laser Institute] , biomaterials, photonic materials, hologram, biomedical devices, biophotonics Patrick Farmer [Chemistry] , electrochemistry in thin surfactant films, hybrid enzyme/inorganic materials, biopolymers Frank Feher [Chemistry] , inorganic/organic hybrid polymers, silsesquioxanes, nanostructured chemicals, high performance polymers, surfaces/interfaces Alex Figotin [Mathematics] , photonic crystals, band gap materials, all optical transistor, light trapping, nonlinear periodic dielectric structures Zhibin Guan [Chemistry] , Biomolecular Materials, Biomimetic, Polymerization Catalysis, Polymer Topology Control, Nano-Composite Materials John Hemminger [Chemistry] , catalysis, nano-confined chemistry, surface/interface chemistry and physics, atomic scale microscopy, chemistry of atmospheric particles Bo Hong [Chemistry] , metal-organic systems, metallomacrocycles, dendrimers, supramolecular photochemistry, molecular rods

55. Ab Initio Calculations On Magnetic Properties Of Diluted Magnetic Semiconductors Chapter 12 Physical Chemistry of Nanomaterials. Title Ab Initio Calculations on Magnetic properties of Diluted Magnetic Semiconductors. http://www.nsti.org/procs/Nanotech2003v3/12/T52.05

Home Contact Us Site Map Nano Science and Technology Institute ABOUT SERVICES EVENTS PUBLICATIONS ... NEWS Publications Nanotech 2003 Vol. 3 Publications Nanotech 2004 Vol. 1 Nanotech 2004 Vol. 2 Nanotech 2004 Vol. 3 ... Order Form Nanotech 2003 Vol. 3 Technical Proceedings of the 2003 Nanotechnology Conference and Trade Show, Volume 3 Chapter 12: Physical Chemistry of Nanomaterials Title: Ab Initio Calculations on Magnetic Properties of Diluted Magnetic Semiconductors Authors: Y-S Kim, H. Kim and Y-C Chung Affilation: Hanyang University, KR Pages: Keywords: ab initio, DMS, energetic stability, magnetic moment Abstract: Some diluted magnetic semiconductors (DMS), in which magnetic elements are substituted for a small fraction (~5%) of host elements in a semiconductor lattice, show ferromagnetism, and thus possess potential applicability in spintronics. To obtain quantum-mechanical understanding of electronic and spin structure, we have performed ab initio total energy calculations on IV:TM (IV=SiC, Si, Ge, TM=V, Cr, Mn, Fe, Co, Ni). We used the generalized gradient approximation (GGA) to describe the exchange-correlation interaction between the electrons, and incorporated the projector augmented wave (PAW) potential to simulate the electron-ion interaction. The stability of the ferromagnetic phase in SiC-, Si-, and Ge-based DMS is investigated comprehensively. From the energetics, we found that IV:TM reveals ferromagnetism for the case of V, Cr, Mn, and Fe. The origin of the magnetism will be discussed in terms of the density of states and the wave function characters around the Fermi level.

56. Nanofoam Exhibits Surprising Magnetic Properties Nanofoam Exhibits Surprising Magnetic properties. The researchers concluded that the magnetic properties come from the complex structure of the nanofoam itself. http://www.pa.msu.edu/~tomanek/publicity/magfoam-14may04.html

May 2004 Issue comments or questions? email apsnews email webmaster Nanofoam Exhibits Surprising Magnetic Properties By Ernie Tretkoff A new form of carbon exhibits surprising magnetic properties that could make it useful in future spintronics or biomedical applications, researchers reported at the APS March Meeting. The material, called carbon nanofoam for its low density and web-like structure, is the only form of pure carbon known to be ferromagnetic. Carbon nanofoam is structurally distinct from the other four known forms of carbon—graphite, diamond, fullerenes ( buckyballs), and nanotubes. With a density of about 2 mg/cm , comparable to that of aerogel, carbon nanofoam is one of the lightest known solid substances. But what's most remarkable about the material, the researchers said, is that unlike other forms of carbon, the nanofoam is ferromagnetic, like a refrigerator magnet. However, at room temperature, the nanofoam's magnetization disappears a few hours after the material is produced. A collaboration of researchers from Greece and Australia produced the carbon nanofoam by shooting a high-powered, ultra-fast laser at disordered solid carbon in an argon-filled chamber.

57. 1. Physikalisches Institut, Universitaet Stuttgart - Work Group Molecular Magnet Topic for PhDThesis Magnetic properties of Polyoxometallates Giant molecular magnets. Single molecule magnets (SMM) are molecules http://www.pi1.physik.uni-stuttgart.de/Themen/MolMagn/GiantMM_e.html

1. Physikalisches Institut Topic for PhD-Thesis: Magnetic Properties of Polyoxometallates: Giant molecular magnets. Single molecule magnets (SMM) are molecules that show slow relaxation of the magnetization of purely molecular origin. Most are parts of a transition metal oxide or hydroxide lattice encapsuled by organic ligands. The first SMM, Mn12ac is still the SMM with the highest blocking temperature of the magnetization. The requirements for an SMM are: a large spin ground state and a large, negative zero-field splitting. A famous class of large clusters are polyoxometallates which can be as big as proteins. In recent years it has proved possible to incorporate paramagnetic ions into these clusters. This opens up a way to create new SMM. Frequency Domain Magnetic Resonance Spectroscopy The magnetic properties of another class of paramagnetic polyoxometallates that are characterized by a S = spin ground state are very interesting for other reasons. We are especially interested in the magnetic excitations and spin level crossings in these materials. Keywords: Molecular and Solid State Physics, Magnetic Resonance, Optical Spectroscopy, Low Temperature Techniques.

58. Unconventional Electronic And Magnetic Properties Of Nano-graphite Unconventional electronic and magnetic properties of nanographite. Toshiaki Enoki *, a , Yousuke Kobayashi a , Naoki Kawatsu a , Yoshiyuki http://www.foresight.org/Conferences/MNT10/Abstracts/Enoki/

Home New on this Website Site Map Search ... Abstracts Unconventional electronic and magnetic properties of nano-graphite Toshiaki Enoki *, a , Yousuke Kobayashi a , Naoki Kawatsu a , Yoshiyuki Shibayama a , B. L. V. Prasad a , Hirohiko Sato a , Kazuyuki Takai a , and Kikuo Harigaya b a Department of Chemistry, Tokyo Institute of Technology, Tokyo, 152-8551 JAPAN b National Institute of Advanced Industrial Science and Technology This is an abstract for a presentation given at the 10th Foresight Conference on Molecular Nanotechnology Corresponding Address: Toshiaki Enoki Department of Chemistry, Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551 JAPAN Phone: 81-3-5734-2242 Fax: 81-3-5734-2242 Email: tenoki@chem.titech.ac.jp Foresight Activities Foresight Conferences The 10th Conference ... Become a Senior Associate Use CritSuite to comment on this page and to see others' comments. Last updated 24 June 2002. The URL of this document is: http://www.foresight.org/Conferences/MNT10/Abstracts/Enoki/index.html Send requests for information about Foresight Institute activities and membership to foresight@foresight.org

59. Magnetic Properties Of The Old Crow Tephra: Identification Of A Complex Iron Tit Magnetic properties of the Old Crow tephra Identification of a complex iron titanium oxide mineralogy. France Lagroix, Subir K. Banerjee, and Mike J. Jackson. http://www.agu.org/pubs/crossref/2004/2003JB002678.shtml

Become an AGU Member Subscribe to AGU Journals View full article: HTML PDF JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 109, B01104, doi:10.1029/2003JB002678, 2004 Magnetic properties of the Old Crow tephra: Identification of a complex iron titanium oxide mineralogy France Lagroix, Subir K. Banerjee, and Mike J. Jackson Institute for Rock Magnetism, Department of Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota, USA Abstract x Ti x O x = 0, 0.1, and 0.3 are identified along with one phase of the ilmenite-hematite solid solution series, Fe y Ti y O y = 0.83. All four phases are present in both density separates, where coarser grains dominate the HD sample and finer more oxidized grains dominate in the LD sample. Low-temperature frequency dependence and field dependence of both the in-phase and quadrature components of magnetic susceptibility are found particularly useful in identifying the magnetic ordering temperature of titanohematite phases with y y = 0.9. The potential for advancing regional correlation of sedimentary deposits through the identification of Fe-Ti oxides common to tephra beds by low-temperature magnetism is illustrated in this study. Received 8 July 2003 ; revised 20 October 2003 ; accepted 23 October 2003 ; published 16 January 2004 Keywords: low-temperature magnetism, frequency and amplitude dependence of AC susceptibility, ilmenite-hematite and magnetite-ulvospinel solid solution series, tephra, stratigraphic correlation.

60. Mineral Magnetic Properties Of Loess/paleosol Couplets Of The Central Loess Plat Mineral magnetic properties of loess/paleosol couplets of the central loess plateau of China over the last 1.2 Myr. Chenglong Deng and Rixiang Zhu. http://www.agu.org/pubs/crossref/2004/2003JB002532.shtml

Become an AGU Member Subscribe to AGU Journals View full article: HTML PDF JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 109, B01103, doi:10.1029/2003JB002532, 2004 Mineral magnetic properties of loess/paleosol couplets of the central loess plateau of China over the last 1.2 Myr Chenglong Deng and Rixiang Zhu Paleomagnetism Laboratory, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China Kenneth L. Verosub Department of Geology, University of California, Davis, California, USA Michael J. Singer Department of Land, Air and Water Resources, University of California, Davis, California, USA Natasa J. Vidic Department of Geology, University of California, Davis, California, USA Department of Land, Air and Water Resources, University of California, Davis, California, USA Agronomy Department, University of Ljubljana, Ljubljana, Slovenia Abstract Received 4 April 2003 ; revised 4 October 2003 ; accepted 23 October 2003 ; published 16 January 2004 Keywords: loess, paleosol, mineral magnetism, pedogenesis, loess plateau. Index Terms: 1540 Geomagnetism and Paleomagnetism: Rock and mineral magnetism; 1512 Geomagnetism and Paleomagnetism: Environmental magnetism; 1519 Geomagnetism and Paleomagnetism: Magnetic mineralogy and petrology.

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