Magneto-optical imaging of iron-oxypnictide superconductor LaFeAs(O,F)

Yasuyuki Nakajima; Toshihide Maruoka; Tsuyoshi Tamegai; Yoichi Kamihara; Masahiro Hirano; Hideo Hosono

doi:10.1016/j.physc.2009.10.102

Magneto-optical imaging of iron-oxypnictide superconductor LaFeAs(O,F)

Yasuyuki Nakajima
, Toshihide Maruoka
, Tsuyoshi Tamegai
, Yoichi Kamihara
, Masahiro Hirano
, Hideo Hosono

研究成果: Article › 査読

4 被引用数 (Scopus)

抄録

We report the magneto-optical imaging for polycrystalline LaFeAsO _0.95F_0.05 and LaFeAsO_0.892F_0.108. We find a significant magneto-optical contrast with marked inhomogeneities and with a typical superconducting grain size ∼20-40 μm. Although intergrain critical current density is negligibly small, intragrain critical current density obtained from magneto-optical image is about 1 × 10⁵ A/cm² at 5 K, which is smaller than other rare-earth-based iron-oxypnictide superconductors but is potentially attractive for technological applications.

本文言語	English
ページ（範囲）	S406-S407
ジャーナル	Physica C: Superconductivity and its Applications
巻	470
号	SUPPL.1
DOI	https://doi.org/10.1016/j.physc.2009.10.102
出版ステータス	Published - 2010 12月
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

文献へのアクセス

10.1016/j.physc.2009.10.102

他のファイルとリンク

引用スタイル

@article{f1f832332d8a4bb1aa43f43e03c29059,

title = "Magneto-optical imaging of iron-oxypnictide superconductor LaFeAs(O,F)",

abstract = "We report the magneto-optical imaging for polycrystalline LaFeAsO 0.95F0.05 and LaFeAsO0.892F0.108. We find a significant magneto-optical contrast with marked inhomogeneities and with a typical superconducting grain size ∼20-40 μm. Although intergrain critical current density is negligibly small, intragrain critical current density obtained from magneto-optical image is about 1 {\texttimes} 105 A/cm2 at 5 K, which is smaller than other rare-earth-based iron-oxypnictide superconductors but is potentially attractive for technological applications.",

keywords = "Critical current density, Iron-oxypnictides, Magneto-optical imaging",

author = "Yasuyuki Nakajima and Toshihide Maruoka and Tsuyoshi Tamegai and Yoichi Kamihara and Masahiro Hirano and Hideo Hosono",

year = "2010",

month = dec,

doi = "10.1016/j.physc.2009.10.102",

language = "English",

volume = "470",

pages = "S406--S407",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "SUPPL.1",

}

TY - JOUR

T1 - Magneto-optical imaging of iron-oxypnictide superconductor LaFeAs(O,F)

AU - Nakajima, Yasuyuki

AU - Maruoka, Toshihide

AU - Tamegai, Tsuyoshi

AU - Kamihara, Yoichi

AU - Hirano, Masahiro

AU - Hosono, Hideo

PY - 2010/12

Y1 - 2010/12

N2 - We report the magneto-optical imaging for polycrystalline LaFeAsO 0.95F0.05 and LaFeAsO0.892F0.108. We find a significant magneto-optical contrast with marked inhomogeneities and with a typical superconducting grain size ∼20-40 μm. Although intergrain critical current density is negligibly small, intragrain critical current density obtained from magneto-optical image is about 1 × 105 A/cm2 at 5 K, which is smaller than other rare-earth-based iron-oxypnictide superconductors but is potentially attractive for technological applications.

AB - We report the magneto-optical imaging for polycrystalline LaFeAsO 0.95F0.05 and LaFeAsO0.892F0.108. We find a significant magneto-optical contrast with marked inhomogeneities and with a typical superconducting grain size ∼20-40 μm. Although intergrain critical current density is negligibly small, intragrain critical current density obtained from magneto-optical image is about 1 × 105 A/cm2 at 5 K, which is smaller than other rare-earth-based iron-oxypnictide superconductors but is potentially attractive for technological applications.

KW - Critical current density

KW - Iron-oxypnictides

KW - Magneto-optical imaging

UR - https://www.scopus.com/pages/publications/78649688657

UR - https://www.scopus.com/pages/publications/78649688657#tab=citedBy

U2 - 10.1016/j.physc.2009.10.102

DO - 10.1016/j.physc.2009.10.102

M3 - Article

AN - SCOPUS:78649688657

SN - 0921-4534

VL - 470

SP - S406-S407

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - SUPPL.1

ER -

Magneto-optical imaging of iron-oxypnictide superconductor LaFeAs(O,F)

抄録

ASJC Scopus subject areas

文献へのアクセス

他のファイルとリンク

フィンガープリント

引用スタイル