Growth Conditions and Some Properties of TmB_4 and TmAlB_4 Single Crystals Obtained from High-Temperature Aluminium Metal Solution
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概要
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TmB_4 and TmAlB_4 single crystals were obtained by the high-temperature aluminium solution method using thulium oxide powder and crystalline boron powder as starting materials. The optimum conditions to obtained relatively large crystals mentioned above were found to include soaking temperature 1500℃, soaking time 10 h, cooling rate 50℃・h^<-1> and the atomic ratios of starting materials : B/Tm=5.5, Al/Tm=119.25 for TmB_4 ; B/Tm=2.0, Al/Tm=119.25 for TmAlB_4. In the case of TmB_4, polyhedra single crystals were obtained. The ternary single crystals TmAlB_4 were generally obtained in the form of prismatic shape extending in the<001>direction or with well developed (100) faces. The as-grown TmB_4 and TmAlB_4 single crystals were used for chemical analysis and measurements of unit cell dimensions. Densities, microhardness and electrical resistivity of the as-grown crystals was studied.
- 社団法人応用物理学会の論文
- 1994-05-15
著者
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岡田 茂
東京大学大学院農学生命科学研究科
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OKADA Shigeru
Department of Anti-Aging Food Sciences, Dentistry and Pharmaceutical Sciences, Okayama University Gr
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Okada Shigeru
Department Of Anti-aging Food Sciences Dentistry And Pharmaceutical Sciences Okayama University Grad
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KUDOU Kunio
Department of Mechanical Engineering, Kanagawa University
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Torsten Lundstrom
ウプサラ大学化学研究所
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Lundstroem T
Uppsala Univ. Uppsala Swe
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Lundstrom Torsten
Institute Of Chemistry Uppsala University
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Lundstrom Torsten
ウプサラ大学化学研究所
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Lundstrom Torsten
Institute Of Chemistry University Of Uppsala
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Yu Y
Shanghai Institute Of Ceramics Chinese Academy Of Sciences
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YU Yang
Institute of Chemistry, University of Uppsala
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Okada Shigeru
Department Of Fisheries Faculty Of Agriculture The University Of Tokyo
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Yu Yang
Institute Of Chemistry Uppsala University
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