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Magnetism, Electronic Properties and Structure at High Density State of Magnetic Solids

Published online by Cambridge University Press:  10 February 2011

A. G. Gavrejuk ,
G. N. Stepanov ,
L. A. Trojan ,
V. A. Sidorov ,
I. S. Lyubutin ,
B. Palosz ,
S. Steumakh  and
M. Winzenick
A. G. Gavrejuk
Affiliation:
Institute for High Pressure Physics RAS, Troitsk, Moscow reg., 142092, Russia, E-mail: alexg@ns.hppi.troitsk.ru
G. N. Stepanov
Affiliation:
Institute for High Pressure Physics RAS, Troitsk, Moscow reg., 142092, Russia, E-mail: alexg@ns.hppi.troitsk.ru
L. A. Trojan
Affiliation:
Institute for High Pressure Physics RAS, Troitsk, Moscow reg., 142092, Russia, E-mail: alexg@ns.hppi.troitsk.ru
V. A. Sidorov
Affiliation:
Institute for High Pressure Physics RAS, Troitsk, Moscow reg., 142092, Russia, E-mail: alexg@ns.hppi.troitsk.ru
I. S. Lyubutin
Affiliation:
Institute of Crystalography RAS, Leninsky pr. 59, Moscow 117333, Russia
B. Palosz
Affiliation:
High Pressure Research Center, Polish Academy of Sciences, 01 -142 Warsaw, Sokolowska 29.
S. Steumakh
Affiliation:
High Pressure Research Center, Polish Academy of Sciences, 01 -142 Warsaw, Sokolowska 29.
M. Winzenick
Affiliation:
Univesitaet-G-H Paderborn, Fachbereich 6 Physik, Warburgerstr. 100, 33098 Paderborn, Germany
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Abstract

We develop and apply high pressure techniques to study the modification of electronic structure, magnetic properties, and local crystal structure, in magnetic materials under high pressure. The variation in inter-atomic distances and atomic volumes in the high pressure regime provides new information for elucidating electronic processes in solids, and for understanding the connection between electronic structure and magnetic properties of matter.

For our samples we used rare-earth orthoferrites, which are of the perovskite-type structure, and Heusler alloys, with the cubic structure. Those materials are known to be magnetic insulators and magnetic metals, respectively.

We studied the following properties induced by high pressure: electronic structure, spin crossover effects, magnetic to non-magnetic transitions, and insulator-to-metal transitions. The problems of delocalization, distribution of spin, and charge density distribution in dielectric materials, semiconductors, and metals, as well as chemical bonding can be investigated in this way.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 499: Symposium DD – High Pressure Materials Research , 1997 , 393
Copyright
Copyright © Materials Research Society 1998

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References

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