Electric and Magnetic Properties of Newly Synthesized Spinel Manganites

Kazumasa Uchida; Ikuka Chiba; Atsunori Kamegawa; Hitoshi Takamura; Masuo Okada

doi:10.2497/jjspm.45.636

Electric and Magnetic Properties of Newly Synthesized Spinel Manganites

Kazumasa Uchida, Ikuka Chiba, Atsunori Kamegawa, Hitoshi Takamura, Masuo Okada

ENG - Materials Science

Tohoku University

Research output: Contribution to journal › Article › peer-review

Abstract

The crystal structure and electric and magnetic properties of newly synthesized spinel manganites were investigated. CuNi_0.5Mn_1.5O₄ had cubic spinel structure, and magnetoresistance effect like CMR in perovskite manganites was observed in this system for the first time. Judging from the calculation of effective-valency according to the result of Rietveld analysis, it was estimated that both of Mn³⁺ and Mn⁴⁺ are in octahedral site. This fact may be related with the reason why magnetoresistance effect appealed in this system.

Original language	English
Pages (from-to)	636-640
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	45
Issue number	7
DOIs	https://doi.org/10.2497/jjspm.45.636
Publication status	Published - 1998 Jul

Keywords

CuNiMnO
Magnetic oxide
Magnetoresistance
Spinel structure

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10.2497/jjspm.45.636

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title = "Electric and Magnetic Properties of Newly Synthesized Spinel Manganites",

abstract = "The crystal structure and electric and magnetic properties of newly synthesized spinel manganites were investigated. CuNi0.5Mn1.5O4 had cubic spinel structure, and magnetoresistance effect like CMR in perovskite manganites was observed in this system for the first time. Judging from the calculation of effective-valency according to the result of Rietveld analysis, it was estimated that both of Mn3+ and Mn4+ are in octahedral site. This fact may be related with the reason why magnetoresistance effect appealed in this system.",

keywords = "CuNiMnO, Magnetic oxide, Magnetoresistance, Spinel structure",

author = "Kazumasa Uchida and Ikuka Chiba and Atsunori Kamegawa and Hitoshi Takamura and Masuo Okada",

year = "1998",

month = jul,

doi = "10.2497/jjspm.45.636",

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pages = "636--640",

journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

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TY - JOUR

T1 - Electric and Magnetic Properties of Newly Synthesized Spinel Manganites

AU - Uchida, Kazumasa

AU - Chiba, Ikuka

AU - Kamegawa, Atsunori

AU - Takamura, Hitoshi

AU - Okada, Masuo

PY - 1998/7

Y1 - 1998/7

N2 - The crystal structure and electric and magnetic properties of newly synthesized spinel manganites were investigated. CuNi0.5Mn1.5O4 had cubic spinel structure, and magnetoresistance effect like CMR in perovskite manganites was observed in this system for the first time. Judging from the calculation of effective-valency according to the result of Rietveld analysis, it was estimated that both of Mn3+ and Mn4+ are in octahedral site. This fact may be related with the reason why magnetoresistance effect appealed in this system.

AB - The crystal structure and electric and magnetic properties of newly synthesized spinel manganites were investigated. CuNi0.5Mn1.5O4 had cubic spinel structure, and magnetoresistance effect like CMR in perovskite manganites was observed in this system for the first time. Judging from the calculation of effective-valency according to the result of Rietveld analysis, it was estimated that both of Mn3+ and Mn4+ are in octahedral site. This fact may be related with the reason why magnetoresistance effect appealed in this system.

KW - CuNiMnO

KW - Magnetic oxide

KW - Magnetoresistance

KW - Spinel structure

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DO - 10.2497/jjspm.45.636

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JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

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ER -

Electric and Magnetic Properties of Newly Synthesized Spinel Manganites

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Keywords

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