Large magnetoresistance effect in polycrystalline isotropie LA-AM-MN-O ceramics (AM=Na, K, Rb, Cs)

Masaaki Imura; Takahiro Takahashi; Hitoshi Takamura; Terumi Tanaka; Satoshi Sugimoto; Motofumi Homma; Masuo Okada

doi:10.2320/matertrans1989.37.1219

Large magnetoresistance effect in polycrystalline isotropie LA-AM-MN-O ceramics (AM=Na, K, Rb, Cs)

Masaaki Imura, Takahiro Takahashi, Hitoshi Takamura, Terumi Tanaka, Satoshi Sugimoto, Motofumi Homma, Masuo Okada

ENG - Materials Science

Tohoku University

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

5 Citations (Scopus)

Abstract

Polycrystalline isotropic perovskite-like La_5/6AM_1/6MnO₃ (AM=Na, K, Rb, Cs) partially substituted trivalent La³⁺ for monovalent cations were fabricated by conventional ceramics techniques and their magnetoresistance effects in addition to magnetic/electrical properties were studied. The all studied samples show magnetization as large as about 100-110 μWb-m-kg^-1 at 77 K and high electrical conductivity of 10^-3 Ω-m order at 300 K. At room temperature polycrystalline isotropic La_5/6K_1/6MnO₃ shows large negative magnetoresistance effect Δp/ρ₀= -20 % when magnetic field of 1. 5 T is applied. This value is larger than the previously reported values for La_1-xMe_xMnO₃ (Me=divalent cations) polycrystalline ceramics.

Original language	English
Pages (from-to)	1219-1223
Number of pages	5
Journal	materials transactions, jim
Volume	37
Issue number	5
DOIs	https://doi.org/10.2320/matertrans1989.37.1219
Publication status	Published - 1996

Keywords

Alkaline-metal
Magnetoresistance effect
Manganite
Monovalent cation
Perovskile structure
Polycrystalline isotropic ceramics

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10.2320/matertrans1989.37.1219

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title = "Large magnetoresistance effect in polycrystalline isotropie LA-AM-MN-O ceramics (AM=Na, K, Rb, Cs)",

abstract = "Polycrystalline isotropic perovskite-like La5/6AM1/6MnO3 (AM=Na, K, Rb, Cs) partially substituted trivalent La3+ for monovalent cations were fabricated by conventional ceramics techniques and their magnetoresistance effects in addition to magnetic/electrical properties were studied. The all studied samples show magnetization as large as about 100-110 μWb-m-kg-1 at 77 K and high electrical conductivity of 10-3 Ω-m order at 300 K. At room temperature polycrystalline isotropic La5/6K1/6MnO3 shows large negative magnetoresistance effect Δp/ρ0= -20 % when magnetic field of 1. 5 T is applied. This value is larger than the previously reported values for La1-xMexMnO3 (Me=divalent cations) polycrystalline ceramics.",

keywords = "Alkaline-metal, Magnetoresistance effect, Manganite, Monovalent cation, Perovskile structure, Polycrystalline isotropic ceramics",

author = "Masaaki Imura and Takahiro Takahashi and Hitoshi Takamura and Terumi Tanaka and Satoshi Sugimoto and Motofumi Homma and Masuo Okada",

year = "1996",

doi = "10.2320/matertrans1989.37.1219",

language = "English",

volume = "37",

pages = "1219--1223",

journal = "materials transactions, jim",

issn = "0916-1821",

publisher = "Japan Institute of Metals (JIM)",

number = "5",

}

TY - JOUR

T1 - Large magnetoresistance effect in polycrystalline isotropie LA-AM-MN-O ceramics (AM=Na, K, Rb, Cs)

AU - Imura, Masaaki

AU - Takahashi, Takahiro

AU - Takamura, Hitoshi

AU - Tanaka, Terumi

AU - Sugimoto, Satoshi

AU - Homma, Motofumi

AU - Okada, Masuo

PY - 1996

Y1 - 1996

N2 - Polycrystalline isotropic perovskite-like La5/6AM1/6MnO3 (AM=Na, K, Rb, Cs) partially substituted trivalent La3+ for monovalent cations were fabricated by conventional ceramics techniques and their magnetoresistance effects in addition to magnetic/electrical properties were studied. The all studied samples show magnetization as large as about 100-110 μWb-m-kg-1 at 77 K and high electrical conductivity of 10-3 Ω-m order at 300 K. At room temperature polycrystalline isotropic La5/6K1/6MnO3 shows large negative magnetoresistance effect Δp/ρ0= -20 % when magnetic field of 1. 5 T is applied. This value is larger than the previously reported values for La1-xMexMnO3 (Me=divalent cations) polycrystalline ceramics.

AB - Polycrystalline isotropic perovskite-like La5/6AM1/6MnO3 (AM=Na, K, Rb, Cs) partially substituted trivalent La3+ for monovalent cations were fabricated by conventional ceramics techniques and their magnetoresistance effects in addition to magnetic/electrical properties were studied. The all studied samples show magnetization as large as about 100-110 μWb-m-kg-1 at 77 K and high electrical conductivity of 10-3 Ω-m order at 300 K. At room temperature polycrystalline isotropic La5/6K1/6MnO3 shows large negative magnetoresistance effect Δp/ρ0= -20 % when magnetic field of 1. 5 T is applied. This value is larger than the previously reported values for La1-xMexMnO3 (Me=divalent cations) polycrystalline ceramics.

KW - Alkaline-metal

KW - Magnetoresistance effect

KW - Manganite

KW - Monovalent cation

KW - Perovskile structure

KW - Polycrystalline isotropic ceramics

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U2 - 10.2320/matertrans1989.37.1219

DO - 10.2320/matertrans1989.37.1219

M3 - Article

AN - SCOPUS:0030145547

SN - 0916-1821

VL - 37

SP - 1219

EP - 1223

JO - materials transactions, jim

JF - materials transactions, jim

IS - 5

ER -

Large magnetoresistance effect in polycrystalline isotropie LA-AM-MN-O ceramics (AM=Na, K, Rb, Cs)

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Keywords

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