Crystal growth and some properties of REMn2Si2 (RE = Er, Tm, Yb, Lu) compounds

被引：11

作者：

Okada, S

Kudou, K

Mori, T

Iizumi, K

Shishido, T

Tanaka, T

Rogl, P

机构：

[1] Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria

[2] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi, Japan

[3] Tokyo Inst Polytech, Fac Engn, Atsugi, Kanagawa 2430297, Japan

[4] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan

[5] Kanagawa Univ, Fac Engn, Kanagawa 2218686, Japan

[6] Kokushikan Univ, Fac Engn, Setagaya Ku, Tokyo 1548515, Japan

来源：

JOURNAL OF CRYSTAL GROWTH | 2002年 / 244卷 / 3-4期

关键词：

chemical analysis; crystal morphology; lead flux; magnetic susceptibility; microhardness; oxidation resistance; unit cell parameter; growth from high temperature solutions; single crystal growth;

D O I：

10.1016/S0022-0248(02)01689-5

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Single crystals of REMn2Si2 (RE = Er, Tm, Yb, Lu) were grown from a high-temperature lead metal flux in an Ar atmosphere. The REMn2Si2 crystals were plates enclosed by large {101} faces, and small {100} and {101} faces; maximum crystal size was 2.5 x 2.5 x 0.02 mm. Chemical analyses of the crystals show the chemical composition with atomic ratios RE (RE = Er, Tm, Yb, Lu):Mn:Si = 1:2:2. The values of the micro-Vickers hardness for the {001} faces of ErMn2Si2, TmMn2Si2, YbMn2Si2 and LuMn2Si2 are 5.0 + 0.4, 6.3 + 0.3, 7.9 + 0.3 and 6.1 + 0.4 GPa, respectively. According to thermogravimetric and differential thermal analyses, the oxidation of ErMn2Si2, TmMn2Si2, YbMn2Si2 and LuMn2Si2 crystals began to proceed at about 778, 978, 987, and 974 K, respectively. The results of magnetic susceptibility measurements down to low temperatures of the compounds are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：267 / 273

页数：7