Crystal growth and physical properties of lu(Al1-x tx )b4 (t = fe, cr) by al-self flux

Kaoru Kouzu, Takashi Yamasaki, Shigeru Okada, Takao Mori, Quansheng Guo, Toetsu Shishido, Kunio Yubuta, Akiko Nomura, Akira Yoshikawa, Peter Rogl

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

Crystals of the quaternary compounds α-Lu(Al1-xTx)B4 (T = Fe, Cr) (YCrB4-type, orthorhombic, Pbam), obtained from the nominal composition of Lu(Al1-xTx)B3, were grown by using Al flux mixed with T metal at 1773 K for 5 h under an Ar atmosphere. The maximum dimensions and morphology of the crystals obtained were about 0.7 mm × 0.5 mm for flake-type crystals of Lu(Al1-xCrx)B4 and about 5.2 mm × 0.2 mm for prism crystals of Lu(Al1-xFex)B4 . The lattice constants determination and chemical analyses of Lu(Al1-xTx)B4 (T = Fe, Cr) compounds were carried out for Fe 0.5-10.0 at% and Cr 0.5-1.0 at%. The lattice constants and the unit lattice volume in Lu(Al1-xTx)B4 crystals decreased with increase of the concentration of Fe or Cr. The values of micro-Vickers hardness of Lu(Al1-xFex)B4 (x = 0.005-0.030) and Lu(Al1-xCrx)B4 (x = 0.005-0.010) samples are in the ranges of 16(2)-20(3) GPa and 13(2)-16(3) GPa, respectively. The hardness values showed a little increase as the solid solution of Fe or Cr was realized in Lu(Al1-xTx)B4, possibly because of distortion to the crystal structure. The magnetic susceptibility of as-grown Lu(Al0.995 Fe0.005 )B4 crystals for example, exhibited diamagnetic behavior with a small ferromagnetic component.

本文言語英語
ホスト出版物のタイトルSolid Compounds of Transition Elements III
編集者Ernst Bauer, Herbert Müller, Daniel Fruchart, Herwig Michor
出版社Trans Tech Publications Ltd
ページ120-126
ページ数7
ISBN(印刷版)9783035713022
DOI
出版ステータス出版済み - 2019
外部発表はい
イベント21st International Conference on Solid Compounds of Transition Elements, SCTE 2018 - Vienna, オーストリア
継続期間: 3 25 20183 29 2018

出版物シリーズ

名前Solid State Phenomena
289 SSP
ISSN(印刷版)1012-0394
ISSN(電子版)1662-9779

会議

会議21st International Conference on Solid Compounds of Transition Elements, SCTE 2018
国/地域オーストリア
CityVienna
Period3/25/183/29/18

All Science Journal Classification (ASJC) codes

  • 原子分子物理学および光学
  • 材料科学(全般)
  • 凝縮系物理学

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「Crystal growth and physical properties of lu(Al<sub>1-x</sub> t<sub>x</sub> )b<sub>4</sub> (t = fe, cr) by al-self flux」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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