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Title: Anisotropic hyperfine field fluctuation in La{sub 0.67}Ca{sub 0.33}Mn{sub 0.99}Fe{sub 0.01}O{sub 3}

Abstract

Colossal magnetoresistance (CMR), Moessbauer spectra, and neutron diffraction of the iron-doped manganite, La{sub 0.67}Ca{sub 0.33}Mn{sub 0.99} {sup 57}Fe{sub 0.01}O{sub 3}, have been studied. The crystal structure is found to be cubic perovskite with the lattice parameter a{sub 0} = 3.868 {angstrom}. It is notable that the Curie temperature, T{sub c} = 270 K, line broadening and 1,6 and 3,4 line-width difference appear to suggest anisotropic hyperfine field fluctuation. The temperature dependence of the effective anisotropy energy is also found to decrease rapidly with increasing temperature.

Authors:
; ; ;
Publication Date:
Research Org.:
Kookmin Univ., Seoul (KR)
OSTI Identifier:
20000661
Alternate Identifier(s):
OSTI ID: 20000661
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt1; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; LANTHANUM OXIDES; CALCIUM OXIDES; MANGANESE OXIDES; IRON OXIDES; MAGNETORESISTANCE; DOPED MATERIALS; CRYSTAL STRUCTURE; CURIE POINT; TEMPERATURE DEPENDENCE; MOESSBAUER EFFECT; NEUTRON DIFFRACTION; MAGNETIC PROPERTIES

Citation Formats

Kim, C.S., Park, S.I., Sur, J.C., and Lee, B.W. Anisotropic hyperfine field fluctuation in La{sub 0.67}Ca{sub 0.33}Mn{sub 0.99}Fe{sub 0.01}O{sub 3}. United States: N. p., 1999. Web.
Kim, C.S., Park, S.I., Sur, J.C., & Lee, B.W. Anisotropic hyperfine field fluctuation in La{sub 0.67}Ca{sub 0.33}Mn{sub 0.99}Fe{sub 0.01}O{sub 3}. United States.
Kim, C.S., Park, S.I., Sur, J.C., and Lee, B.W. Wed . "Anisotropic hyperfine field fluctuation in La{sub 0.67}Ca{sub 0.33}Mn{sub 0.99}Fe{sub 0.01}O{sub 3}". United States.
@article{osti_20000661,
title = {Anisotropic hyperfine field fluctuation in La{sub 0.67}Ca{sub 0.33}Mn{sub 0.99}Fe{sub 0.01}O{sub 3}},
author = {Kim, C.S. and Park, S.I. and Sur, J.C. and Lee, B.W.},
abstractNote = {Colossal magnetoresistance (CMR), Moessbauer spectra, and neutron diffraction of the iron-doped manganite, La{sub 0.67}Ca{sub 0.33}Mn{sub 0.99} {sup 57}Fe{sub 0.01}O{sub 3}, have been studied. The crystal structure is found to be cubic perovskite with the lattice parameter a{sub 0} = 3.868 {angstrom}. It is notable that the Curie temperature, T{sub c} = 270 K, line broadening and 1,6 and 3,4 line-width difference appear to suggest anisotropic hyperfine field fluctuation. The temperature dependence of the effective anisotropy energy is also found to decrease rapidly with increasing temperature.},
doi = {},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt1,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}