Subgrain structures and their effects on critical current properties in large single-domain RE123 bulk superconductors

K. Ogasawara; N. Sakai; M. Murakami

doi:10.1016/S0921-4534(02)01530-7

Subgrain structures and their effects on critical current properties in large single-domain RE123 bulk superconductors

K. Ogasawara, N. Sakai, M. Murakami

研究成果: Article › 査読

6 被引用数 (Scopus)

抄録

We have studied the microstructures of subgrains in large single-domain RE123 (RE = Y, Sm) bulk superconductors through microscopic observation and X-ray pole figure analyses. We have found that misorientation of the subgrains increases along with the crystal growth, and also that the misorientation has positive relation to the size and concentration of the second-phase particles. Such subgrains are considered to affect current carrying capabilities in bulk materials, so that we performed magnetic and electric measurements for several samples having different subgrain structures. The relationships between obtained J_c-B or AC transport characteristics and subgrain geometries are discussed.

本文言語	English
ページ（範囲）	727-731
ページ数	5
ジャーナル	Physica C: Superconductivity and its applications
巻	378-381
号	PART 1
DOI	https://doi.org/10.1016/S0921-4534(02)01530-7
出版ステータス	Published - 2002 10月 1
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
エネルギー工学および電力技術
電子工学および電気工学

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10.1016/S0921-4534(02)01530-7

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abstract = "We have studied the microstructures of subgrains in large single-domain RE123 (RE = Y, Sm) bulk superconductors through microscopic observation and X-ray pole figure analyses. We have found that misorientation of the subgrains increases along with the crystal growth, and also that the misorientation has positive relation to the size and concentration of the second-phase particles. Such subgrains are considered to affect current carrying capabilities in bulk materials, so that we performed magnetic and electric measurements for several samples having different subgrain structures. The relationships between obtained Jc-B or AC transport characteristics and subgrain geometries are discussed.",

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T1 - Subgrain structures and their effects on critical current properties in large single-domain RE123 bulk superconductors

AU - Ogasawara, K.

AU - Sakai, N.

AU - Murakami, M.

N1 - Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications.

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N2 - We have studied the microstructures of subgrains in large single-domain RE123 (RE = Y, Sm) bulk superconductors through microscopic observation and X-ray pole figure analyses. We have found that misorientation of the subgrains increases along with the crystal growth, and also that the misorientation has positive relation to the size and concentration of the second-phase particles. Such subgrains are considered to affect current carrying capabilities in bulk materials, so that we performed magnetic and electric measurements for several samples having different subgrain structures. The relationships between obtained Jc-B or AC transport characteristics and subgrain geometries are discussed.

AB - We have studied the microstructures of subgrains in large single-domain RE123 (RE = Y, Sm) bulk superconductors through microscopic observation and X-ray pole figure analyses. We have found that misorientation of the subgrains increases along with the crystal growth, and also that the misorientation has positive relation to the size and concentration of the second-phase particles. Such subgrains are considered to affect current carrying capabilities in bulk materials, so that we performed magnetic and electric measurements for several samples having different subgrain structures. The relationships between obtained Jc-B or AC transport characteristics and subgrain geometries are discussed.

KW - Magnetization

KW - Microscopy

KW - REBCO

KW - Subgrain

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Subgrain structures and their effects on critical current properties in large single-domain RE123 bulk superconductors

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