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Temperature Dependence of Magnetic Compton Profile in DyCo5

Published online by Cambridge University Press:  18 March 2011

Hayato Miyagawa ,
Yasuhiro Watanabe ,
Akihisa Koizumi ,
Nobuhiko Sakai ,
Masaichiro Mizumaki ,
Yoshiharu Sakurai ,
Tetsuya Nakamura  and
Susumu Nanao
Hayato Miyagawa
Affiliation:
Institute of Industrial Science, University of Tokyo7-22-1, Roppongi, Minato-ku, Tokyo 106-8558, Japan
Yasuhiro Watanabe
Affiliation:
Institute of Industrial Science, University of Tokyo7-22-1, Roppongi, Minato-ku, Tokyo 106-8558, Japan
Akihisa Koizumi
Affiliation:
Faculty of Science, Himeji Institute of Technology, 3-2-1, Kouto, Kamigori, Ako-gun, Hyogo 678-1297, Japan
Nobuhiko Sakai
Affiliation:
Faculty of Science, Himeji Institute of Technology, 3-2-1, Kouto, Kamigori, Ako-gun, Hyogo 678-1297, Japan
Masaichiro Mizumaki
Affiliation:
Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Mikazuki-cho, Sayo-gun, Hyogo 679-5198, Japan
Yoshiharu Sakurai
Affiliation:
Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Mikazuki-cho, Sayo-gun, Hyogo 679-5198, Japan
Tetsuya Nakamura
Affiliation:
RIKEN (The Institute of Physical and Chemical Research), 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
Susumu Nanao
Affiliation:
Institute of Industrial Science, University of Tokyo7-22-1, Roppongi, Minato-ku, Tokyo 106-8558, Japan
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Abstract

Magnetic Compton profiles (MCPs) of a DyCo5.4 single crystal were measured at 10 K, 200 K and 300 K. The temperature dependence of the spin moment, which is deduced from the areas under the normalized MCPs, is significantly different from that of the total magnetization measured by a superconducting quantum interference device (SQUID). This difference is due to the presence of a substantial amount of the orbital moment on a Dy site that does not contribute to the magnetic Compton scattering cross section. The analysis of the MCPs reveals that the absolute value of the spin moment increases with increasing temperature and that the spin magnetic moment of the conduction electrons has an opposite sign to the total spin magnetization in the covered range of temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 658: Symposium GG – Solid-State Chemistry of Inorganic Materials III , 2000 , GG50.1
Copyright
Copyright © Materials Research Society 2001

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References

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