100 MHz high-speed strain monitor using fiber Bragg grating and optical filter applied for magnetostriction measurements of cobaltite at magnetic fields beyond 100 T

被引：5

作者：

Ikeda, Akihiko ^{[1
]}

Nomura, Toshihiro ^{[1
]}

Matsuda, Yasuhiro H. ^{[1
]}

Tani, Shuntaro ^{[2
]}

Kobayashi, Yohei ^{[2
]}

Watanabe, Hiroshi ^{[3
]}

Sato, Keisuke ^{[4
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Int MegaGauss Sci Lab IMGSL, Chiba, Japan

[2] Univ Tokyo, Inst Solid State Phys, Laser & Synchrotron Res Ctr LASOR, Chiba, Japan

[3] Osaka Univ, Grad Sch Frontier Biosci, Osaka, Japan

[4] Ibaraki Natl Coll Technol, Dept Nat Sci, Ibaraki, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2018年 / 536卷

关键词：

Fiber Bragg grating; Magnetostriction; Spin crossover; Cobaltite; Ultrahigh magnetic fields;

D O I：

10.1016/j.physb.2017.09.017

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

High-speed 100 MHz strain monitor using fiber Bragg grating (FBG) and an optical filter has been devised for the magnetostriction measurements under ultrahigh magnetic fields. The longitudinal magnetostriction of LaCoO3 has been measured at room temperature, 115, 7 and 4.2 K up to the maximum magnetic field of 150 T. The field-induced lattice elongations are observed, which are attributed to the spin-state crossover from the low-spin ground state to excited spin-states.

引用

页码：847 / 849

页数：3

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