Nanoscale ferromagnetism in phase-separated manganites

S. Mori; Y. Horibe; T. Asaka; Y. Matsui; C. H. Chen; S. W. Cheong

doi:10.1016/j.jmmm.2006.10.1076

Nanoscale ferromagnetism in phase-separated manganites

S. Mori, Y. Horibe, T. Asaka, Y. Matsui, C. H. Chen, S. W. Cheong

School of Arts and Sciences, New High Energy Theory Center

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

3 Scopus citations

Abstract

Magnetic domain structures in phase-separated manganites were investigated by low-temperature Lorentz electron microscopy, in order to understand some unusual physical properties such as a colossal magnetoresistance (CMR) effect and a metal-to-insulator transition. In particular, we examined a spatial distribution of the charge/orbital-ordered (CO/OO) insulator state and the ferromagnetic (FM) metallic one in phase-separated manganites; Cr-doped Nd_0.5 Ca_0.5 MnO₃ and (La_{1 - x} Pr_x)_{5 / 8} Ca_{3 / 8} MnO₃ with x = 0.375, by obtaining both the dark-field images and Lorentz electron microscopic ones. It is found that an unusual coexistence of the CO/OO and FM metallic states below a FM transition temperature in the two compounds. The present experimental results clearly demonstrated the coexisting state of the two distinct ground states in manganites.

Original language	English (US)
Pages (from-to)	870-872
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.1076
State	Published - Mar 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Keywords

Electron microscopy
Lorentz microscopy
Magnetic domains
Manganites
Phase separation

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10.1016/j.jmmm.2006.10.1076

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title = "Nanoscale ferromagnetism in phase-separated manganites",

abstract = "Magnetic domain structures in phase-separated manganites were investigated by low-temperature Lorentz electron microscopy, in order to understand some unusual physical properties such as a colossal magnetoresistance (CMR) effect and a metal-to-insulator transition. In particular, we examined a spatial distribution of the charge/orbital-ordered (CO/OO) insulator state and the ferromagnetic (FM) metallic one in phase-separated manganites; Cr-doped Nd0.5 Ca0.5 MnO3 and (La1 - x Prx)5 / 8 Ca3 / 8 MnO3 with x = 0.375, by obtaining both the dark-field images and Lorentz electron microscopic ones. It is found that an unusual coexistence of the CO/OO and FM metallic states below a FM transition temperature in the two compounds. The present experimental results clearly demonstrated the coexisting state of the two distinct ground states in manganites.",

keywords = "Electron microscopy, Lorentz microscopy, Magnetic domains, Manganites, Phase separation",

author = "S. Mori and Y. Horibe and T. Asaka and Y. Matsui and Chen, {C. H.} and Cheong, {S. W.}",

year = "2007",

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T1 - Nanoscale ferromagnetism in phase-separated manganites

AU - Mori, S.

AU - Horibe, Y.

AU - Asaka, T.

AU - Matsui, Y.

AU - Chen, C. H.

AU - Cheong, S. W.

PY - 2007/3

Y1 - 2007/3

N2 - Magnetic domain structures in phase-separated manganites were investigated by low-temperature Lorentz electron microscopy, in order to understand some unusual physical properties such as a colossal magnetoresistance (CMR) effect and a metal-to-insulator transition. In particular, we examined a spatial distribution of the charge/orbital-ordered (CO/OO) insulator state and the ferromagnetic (FM) metallic one in phase-separated manganites; Cr-doped Nd0.5 Ca0.5 MnO3 and (La1 - x Prx)5 / 8 Ca3 / 8 MnO3 with x = 0.375, by obtaining both the dark-field images and Lorentz electron microscopic ones. It is found that an unusual coexistence of the CO/OO and FM metallic states below a FM transition temperature in the two compounds. The present experimental results clearly demonstrated the coexisting state of the two distinct ground states in manganites.

AB - Magnetic domain structures in phase-separated manganites were investigated by low-temperature Lorentz electron microscopy, in order to understand some unusual physical properties such as a colossal magnetoresistance (CMR) effect and a metal-to-insulator transition. In particular, we examined a spatial distribution of the charge/orbital-ordered (CO/OO) insulator state and the ferromagnetic (FM) metallic one in phase-separated manganites; Cr-doped Nd0.5 Ca0.5 MnO3 and (La1 - x Prx)5 / 8 Ca3 / 8 MnO3 with x = 0.375, by obtaining both the dark-field images and Lorentz electron microscopic ones. It is found that an unusual coexistence of the CO/OO and FM metallic states below a FM transition temperature in the two compounds. The present experimental results clearly demonstrated the coexisting state of the two distinct ground states in manganites.

KW - Electron microscopy

KW - Lorentz microscopy

KW - Magnetic domains

KW - Manganites

KW - Phase separation

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EP - 872

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2 SUPPL. PART 1

ER -

Nanoscale ferromagnetism in phase-separated manganites

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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