Phase separation in La5/8Sr3/8MnO3 (30%)+LuMnO3 (70%) bulk sample studied by scanning microwave microscopy

Jino Lee; Jewook Park; Ahram Kim; K. Char; Soonyong Park; Namjung Hur; S. W. Cheong

doi:10.1063/1.1842859

Phase separation in La_5/8Sr_3/8MnO₃ (30%)+LuMnO₃ (70%) bulk sample studied by scanning microwave microscopy

Jino Lee
, Jewook Park
, Ahram Kim
, K. Char
, Soonyong Park
, Namjung Hur
, S. W. Cheong

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

4 Scopus citations

Abstract

Using a scanning microwave microscope (SMM), we have investigated the phase separation in a 30% La58 Sr38 Mn O3 (LSMO) +70% LuMn O3 (LMO) polycrystalline pressed powder sample, in which the LSMO phase is a perovskite ferromagnetic metal while the LMO phase is a hexagonal ferroelectric insulator. When the electrical properties of the sample were imaged using our SMM, the sample showed a significant contrast between the metallic LSMO and the insulating LMO grains, indicating a clear phase separation between the two phases. The metallic phase identified by the SMM clearly showed a ferromagnetic signal when investigated by a magnetic force microscope (MFM), providing solid evidence that the metallic phase is indeed the ferromagnetic LSMO. In addition, we have noticed a slight difference between the images generated by SMM and MFM, and we believe that this is due to the different depth scales probed by the two microscopy techniques.

Original language	English
Article number	012502
Pages (from-to)	012502-1-012502-3
Journal	Applied Physics Letters
Volume	86
Issue number	1
DOIs	https://doi.org/10.1063/1.1842859
State	Published - Jan 2005
Externally published	Yes

Funding

This work is supported by Korea Science and Engineering Foundation (KOSEF) through Center for Strongly Correlated Materials Research (CSCMR).

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10.1063/1.1842859

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title = "Phase separation in La5/8Sr3/8MnO3 (30\%)+LuMnO3 (70\%) bulk sample studied by scanning microwave microscopy",

abstract = "Using a scanning microwave microscope (SMM), we have investigated the phase separation in a 30\% La58 Sr38 Mn O3 (LSMO) +70\% LuMn O3 (LMO) polycrystalline pressed powder sample, in which the LSMO phase is a perovskite ferromagnetic metal while the LMO phase is a hexagonal ferroelectric insulator. When the electrical properties of the sample were imaged using our SMM, the sample showed a significant contrast between the metallic LSMO and the insulating LMO grains, indicating a clear phase separation between the two phases. The metallic phase identified by the SMM clearly showed a ferromagnetic signal when investigated by a magnetic force microscope (MFM), providing solid evidence that the metallic phase is indeed the ferromagnetic LSMO. In addition, we have noticed a slight difference between the images generated by SMM and MFM, and we believe that this is due to the different depth scales probed by the two microscopy techniques.",

author = "Jino Lee and Jewook Park and Ahram Kim and K. Char and Soonyong Park and Namjung Hur and Cheong, \{S. W.\}",

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T1 - Phase separation in La5/8Sr3/8MnO3 (30%)+LuMnO3 (70%) bulk sample studied by scanning microwave microscopy

AU - Lee, Jino

AU - Park, Jewook

AU - Kim, Ahram

AU - Char, K.

AU - Park, Soonyong

AU - Hur, Namjung

AU - Cheong, S. W.

PY - 2005/1

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N2 - Using a scanning microwave microscope (SMM), we have investigated the phase separation in a 30% La58 Sr38 Mn O3 (LSMO) +70% LuMn O3 (LMO) polycrystalline pressed powder sample, in which the LSMO phase is a perovskite ferromagnetic metal while the LMO phase is a hexagonal ferroelectric insulator. When the electrical properties of the sample were imaged using our SMM, the sample showed a significant contrast between the metallic LSMO and the insulating LMO grains, indicating a clear phase separation between the two phases. The metallic phase identified by the SMM clearly showed a ferromagnetic signal when investigated by a magnetic force microscope (MFM), providing solid evidence that the metallic phase is indeed the ferromagnetic LSMO. In addition, we have noticed a slight difference between the images generated by SMM and MFM, and we believe that this is due to the different depth scales probed by the two microscopy techniques.

AB - Using a scanning microwave microscope (SMM), we have investigated the phase separation in a 30% La58 Sr38 Mn O3 (LSMO) +70% LuMn O3 (LMO) polycrystalline pressed powder sample, in which the LSMO phase is a perovskite ferromagnetic metal while the LMO phase is a hexagonal ferroelectric insulator. When the electrical properties of the sample were imaged using our SMM, the sample showed a significant contrast between the metallic LSMO and the insulating LMO grains, indicating a clear phase separation between the two phases. The metallic phase identified by the SMM clearly showed a ferromagnetic signal when investigated by a magnetic force microscope (MFM), providing solid evidence that the metallic phase is indeed the ferromagnetic LSMO. In addition, we have noticed a slight difference between the images generated by SMM and MFM, and we believe that this is due to the different depth scales probed by the two microscopy techniques.

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Phase separation in La_5/8Sr_3/8MnO₃ (30%)+LuMnO₃ (70%) bulk sample studied by scanning microwave microscopy

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