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Novel Room-temperature Ferromagnetic Semiconductors Pb1-x-yCaxCryTe

Published online by Cambridge University Press:  31 January 2011

Evgeny P. Skipetrov ,
Elena A. Zvereva ,
Nikolay A. Pichugin ,
Alexey E. Primenko ,
Evgeny I. Slyn'ko  and
Vasily E. Slyn'ko
Evgeny P. Skipetrov
Affiliation:
skip@mig.phys.msu.ru, Moscow State University, Faculty of Physics, Moscow, Russian Federation
Elena A. Zvereva
Affiliation:
zvereva@mig.phys.msu.ru, Moscow State University, Faculty of Physics, Leninskie Gory, 1, Moscow, 119992, Russian Federation
Nikolay A. Pichugin
Affiliation:
pichigin@mail.ru, Moscow State University, Faculty of Phyisics, Moscow, Russian Federation
Alexey E. Primenko
Affiliation:
primenko@mail.ru, Moscow State University, Faculty of Physics, Moscow, Russian Federation
Evgeny I. Slyn'ko
Affiliation:
sei@chv.ukrpack.net, Institute of Material Science Problems, Chernovtsy, Ukraine
Vasily E. Slyn'ko
Affiliation:
slynko.vasily@gmail.com, Institute of Material Science Problems, Chernovtsy, Ukraine
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Abstract

The galvanomagnetic and magnetic properties of novel diluted magnetic semiconductors Pb1-x-yCaxCryTe (x=0.06-0.20, y=0.003-0.045) have been investigated. Temperature dependencies of the resistivity and the Hall coefficient have a metallic character indicating the pinning of Fermi level by the chromium impurity level on the background of the conduction band states. Magnetization curves display a clear hysteresis loop over the whole temperature range investigated. The Curie temperature, determined from the temperature dependencies of magnetization, achieves 345 K. Possible mechanisms of ferromagnetic ordering were discussed.

Keywords

ferromagneticmagnetic propertieselectronic structure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1183: Symposium FF – Novel Materials and Devices for Spintronics , 2009 , 1183-FF06-04
Copyright
Copyright © Materials Research Society 2009

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