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2007 MRS Fall Meeting & Exhibit

November 26 - 30, 2007  | Boston
Meeting Chairs:
 Duane Dimos, Mary Galvin, David Mooney, Konrad Samwer

Symposium I : Nanoscale Magnetic Materials and Applications

2007-11-26   Show All Abstracts

Symposium Organizers

J. Ping Liu University of Texas-Arlington
Eric Fullerton University of California-San Diego
Oliver Gutfleisch IFW Dresden
Dave Sellmyer University of Nebraska-Lincoln
I1: Nanomagnetism, Theoretic Aspects
Session Chairs
Dave Sellmyer
Monday PM, November 26, 2007
Commowealth (Sheraton)

9:30 AM - I1.1
Domain Wall Formation and Domain Wall Resistivities in CocFe1-c and CocNi1-c.

Peter Weinberger 1
1 , Center for Computational Materials Science, Vienna Austria

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9:45 AM - I1.2
Magnetization Reversal in Small FePt:Fe Particles.

Ralph Skomski 1 , J. Liu 2 , Chuan-bing Rong 2 , David Sellmyer 1
1 Nebraska Center for Materials and Nanoscience, and Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska, United States, 2 Department of Physics, University of Texas, Arlington, Texas, United States

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10:00 AM - I1.3
Surface Induced Reduction of Magnetization in Nanoparticles with Competing Exchange Interactions.

Christopher Westman 1 , Joshua Koch 1 , Renat Sabirianov 1 , Hao Zeng 2
1 Physics, University of Nebraska at Omaha, Omaha, Nebraska, United States, 2 Physics, University at Buffalo, the State University of New York, Buffalo, New York, United States

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10:15 AM - I1.4
Two Different Magnetization Reversal Modes in Iron Oxide Nanotubes of Systematically Varied Geometry.

Julien Bachmann 1 , Juan Escrig Murua 2 , Jing Jing 1 , Dora Altbir 2 , Ulrich Goesele 1 , Kornelius Nielsch 1
1 Experimental Department II, Max Planck Institute of Microstructure Physics, Halle Germany, 2 Departamento de Fisica, Universidad de Santiago de Chile, Santiago Chile

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10:30 AM - **I1.5
Theoretical Limit on the Minimal Switching Field and the Switching Current in Magnetization Reversal.

Xiangrong Wang 1
1 , Hong Kong University of Science & Technology, Kowloon, Hong Kong, China

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11:00 AM - *
COFFEE BREAK

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I2: Magnetoresistance, Principles and Devices
Session Chairs
Xiangrong Wang
Monday PM, November 26, 2007
Commowealth (Sheraton)

11:30 AM - **I2.1
Magnetic Tunneling: Pitfalls, Temperature Dependence and Novel Phenomena.

Ivan Schuller 1 , Igor Roshchin 1 , Casey Miller 1 , Zhi-Pan Li 1 , Johan Akerman 2
1 Physics Department, University of California - San Diego, La Jolla, California, United States, 2 Department of Microelectronics and Applied Physics, Royal Institute of Technology, Kista Sweden

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12:00 PM - I2.2
Large Current Suppression Induced by Magnetic Molecular Channels on the Exposed Sides of Magnetic Tunnel Junctions.

Pawan Tyagi 1 , Bruce Hinds 1 2 , Dongfeng Li 2 , Stephen Holmes 2
1 Chemical and Materials Engg., University of Kentucky, Lexington, Kentucky, United States, 2 Department of Chemistry, University of Kentucky, Lexington, Kentucky, United States

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12:15 PM - I2.3
Nanoscaled Magnetoelectronical Sensors for Mechanical Measurements.

Eckhard Quandt 1 2 , Dirk Meyners 1 , Jochen Puchalla 2
1 Faculty of Engineering, University of Kiel, Kiel Germany, 2 Smart Materials, caesar, Bonn Germany

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12:30 PM - **I2.4
MgO-based Magnetic Tunnel Junctions.

Michael Coey 1 , Gen Feng 1 , Jia-Feng Feng 1 , P. Stamenov 1 , K. Oguz 1 , S. van Dijken 1
1 School of Physics / CRANN, University of Dublin, Trinity College, Dublin 2 Ireland

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I3: Exchange Coupling & Exchange Bias
Session Chairs
Eric Fullerton
J. Ping Liu
Monday PM, November 26, 2007
Commowealth (Sheraton)

2:30 PM - I3.1
Angular Dependence of Perpendicular Exchange Bias in FeMn/(FeNi/FeMn)n Multilayers.

Li Sun 1 , Hao Xing 1
1 Mechanical Engineering, University of Houston, Houston, Texas, United States

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2:45 PM - I3.2
Exchange Bias of Ni/FeF2 Bilayers as a Function of the Antiferromagnetic Thickness.

Rafael Morales 1 2 , Ivan Schuller 1
1 Physics Department, University of California San Diego, La Jolla, California, United States, 2 Departamento de Fisica, Universidad de Oviedo, Oviedo Spain

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3:00 PM - **I3.3
Factors Affecting Exchange Bias in Polycrystalline Metallic Thin Films.

Luis Fernandez-Outon 1 , Gonzalo Vallejo-Fernandez 1 , K. O'Grady 1
1 Department of Physics, The University of York, York United Kingdom

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3:30 PM - I3.4
Influence of Vicinal Steps and Interface Roughness on Uniaxial Anisotropy and Exchange Bias in Permalloy Thin Films.

Rantej Bali 1 , Mark Blamire 1
1 Materials Science & Metallurgy, University of Cambridge, Cambridge United Kingdom

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3:45 PM - I3.5
The Effect of Varying Crystallinity and Thickness of the Magnetic Hard Layer on the Exchange Coupling in Fe/CoPt Soft-hard Magnetic Bilayers.

Hiroyuki Oguchi 1 , Antonio Zambano 1 , Samuel Lofland 2 , Daniel Josell 3 , Ichiro Takeuchi 1
1 Department of Materials Science and Engineering, University of Maryland, College Park, Maryland, United States, 2 Department of Physics and Astronomy, Rowan University, Glassboro, New Jersey, United States, 3 , National Institute of Standards and Technology, Gaithersburg, Maryland, United States

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4:00 PM - *
COFFEE BREAK

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4:30 PM - I3.6
Cooling Field Dependent Magnetic Depth Profiles in Exchange-coupled Superlattices.

M. Fitzsimmons 1 , C. Dufour 2 , K. Dumesnil 2
1 LANSCE, LANL, Albuquerque, New Mexico, United States, 2 Laboratoire de Physique des Materiaux, Universite Henri Poincare Nancy I, Vandoeuvre les Nancy France

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4:45 PM - **I3.7
High-throughput Investigation of Exchange-coupled Hard/soft Magnetic Bilayers.

Ichiro Takeuchi 1
1 , University of Maryland, College Park, Maryland, United States

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5:15 PM - I3.8
Influence of Interfacial Non-magnetic Materials on Soft-hard Phase Interactions in Nanocomposite Magnets.

Antonio Zambano 1 , H. Oguchi 1 , I. Takuechi 1 , Y. Choi 2 , J. Liu 3 , S. Lofland 4 , D. Josell 5 , L. Bendersky 5
1 Department of Materials Science and Engineering, and Center for Superconductivity Research, University of Maryland, College Park, Maryland, United States, 2 Materials Science Division, Argonne National Laboratory, Argonne, Illinois, United States, 3 Department of Physics, University of Texas at Arlington, Arlington, Texas, United States, 4 Department of Physics, Rowan University, Glassboro, New Jersey, United States, 5 , NIST, Gaithersburg, Maryland, United States

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5:30 PM - I3.9
Micromagnetic Simulation of the Competition Between Exchange and Magnetostatic Interactions in Composite Magnets.

Chuanbing Rong 1 , J. Ping Liu 1
1 Department of Physics, University of Texas at Arlington, Arlington, Texas, United States

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5:45 PM - I3.10
Activation Energy for Crystallization in Nanocrystalline Exchange Coupled Alloys.

Matthew Willard 1 , Maria Daniil 1 , Juan Saavedra 2 1
1 Multifunctional Materials Branch, U. S. Naval Research Laboratory, Washington, District of Columbia, United States, 2 Department of Mechanical Engineering, University of Puerto Rico, Mayagüez Campus, Washington, Puerto Rico, United States

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I4: Poster Session
Session Chairs
Tuesday AM, November 27, 2007
Exhibition Hall D (Hynes)

9:00 PM - I4.1
Nanoconductive and Magnetic Properties of Nanostructured Iron Thin Films Prepared by Sputtering at Very Low Temperatures.

Carmen Munuera 1 , Felix Jimenez-Villacorta 2 1 , Carmen Ocal 3 , Carlos Prieto 1
1 Instituto de Ciencia Materiales de Madrid, Consejo Superior de Investigaciones Científicas, Madrid Spain, 2 Spline, ESRF, Grenoble France, 3 Instituto de Ciencia de Materiales de Barcelona, Consejo Superior de Investigaciones Científicas, Cerdanyola del Valles Spain

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9:00 PM - I4.10
Enhanced Neel Temperature in Mn-ferrite Nanoparticles Linked to Growth Rate Induced Cation Inversion.

Aria Yang 1 , C. Chinnasamy 1 , Soack Yoon 1 , Jing Lou 1 , Zhuhua Cai 4 , Kailin Hsu 1 , Steve Oliver 3 , Shaheen Islam 2 , Carmine Vittoria 1 , Vincent Harris 1
1 Electrical Engineering, Northeastern University, Boston, Massachusetts, United States, 4 Chemical Engineering, Northeastern University, Boston, Massachusetts, United States, 3 , Gilford High School, Gilford, New Hampshire, United States, 2 , Virginia Union University, Richmond, Virginia, United States

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9:00 PM - I4.11
Synthesis and Functionalization of FeCo Alloy Nanoparticles for Magnetic and Electronic Applications.

Q. Nguyen 1 , Chins Chinnasamy 1 , Soack Yoon 1 , Somu Sivasubramanian 2 , A. Baraskar 1 , Ahmed Busnanina 2 , Sanjeev Mukerjee 3 , Carmine Vittoria 1 , Vincent Harris 1
1 Center for Microwave Magnetic Materials , Northeastern University, Boston, Massachusetts, United States, 2 Center for High- Rate Nanomanufacturing, Northeastern University, Boston, Massachusetts, United States, 3 Dept. of Chemistry and Chemical Biology , Northeastern University, Boston, Massachusetts, United States

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9:00 PM - I4.12
FeCoPt Nanoparticles.

Gregory Poole 1 , David Nikles 1 , Jin Mei Dong 1 , James Weston 1
1 Center for Materials for Information Technology, The University of Alabama, Tuscaloosa, Alabama, United States

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9:00 PM - I4.13
Controlling Ruthenium Redox Chemistry: A Low Temperature Route to SrRuO3 Nanocubes.

Yolonda Smith 1 , Jennifer Noblitt 1 , Amy Prieto 1
1 Chemistry Department, Colorado State University, Fort Collins, Colorado, United States

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9:00 PM - I4.14
Synthesis and Characterization of FePt/Fe3O4 Bimagnetic Nanoparticles.

Vikas Nandwana 1 , Kazuaki Yano 1 , J. Liu 1
1 Physics, University of Texas at Arlington, Arlington, Texas, United States

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9:00 PM - I4.15
Size and Property Control in the Synthesis of Magnetic Iron Nanoparticles.

Judith Lavin 1 , Dale Huber 1 , Todd Monson 1 , Eugene Venturini 1
1 , Sandia National Laboratories, Albuquerque, New Mexico, United States

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9:00 PM - I4.16
Size Dependence of Magnetic Properties of Fe3O4 Particles in AC Magnetic Field.

Domingo Ferrer 1 , Erik Taylor 1 , Miguel Jose-Yacaman 1
1 Chemical Engineering Department, The University of Texas at Austin, Austin, Texas, United States

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9:00 PM - I4.17
Magnetic Field Assisted Fractionation of Non-Magnetic Colloids in Ferrofluid.

Derek Halverson 1 , Gennady Friedman 1
1 ECE department, Drexel University, Philadelphia, Pennsylvania, United States

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9:00 PM - I4.18
Mechanical and Magnetic Properties Characterization of Highly-aligned Nickel Nanowires / Elastomer Composites.

Heather Denver 1 , Timothy Heiman 1 , Elizabeth Martin 2 , Amit Gupta 2 , Xueti Tang 3 , Mutsuhiro Shima 3 , Diana-Andra Borca-Tasciuc 1
1 Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York, United States, 2 Chemical Engineering Department, Rensselaer Polytechnic Institute, Troy, New York, United States, 3 Materials Science Department, Rensselaer Polytechnic Institute, Troy, New York, United States

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