LOW-TEMPERATURE STRUCTURAL PHASE-TRANSITIONS IN RARE-EARTHS SUBSTITUTED CALCIUM MANGANESE OXIDES [CA2-XLNXMNO4, WHERE LN=ND, SM-LU AND Y]

被引：7

作者：

TAKAHASHI, J

KAMEGASHIRA, N

机构：

[1] Department of Materials Science, Toyohashi University of Technology, Toyohashi, Aichi, 441, Tempaku-cho

来源：

MATERIALS RESEARCH BULLETIN | 1993年 / 28卷 / 05期

关键词：

RARE EARTHS; CALCIUM; MANGANESE; OXIDES;

D O I：

10.1016/0025-5408(93)90127-Y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural phase transitions of Ca2-xLnxMnO4 (Ln=Nd, Sm-Lu and Y) were investigated by powder X-ray diffraction in the temperature range 10-1000K. The maximum amount of the substitution, x, for the formation of the single phase had a tendency to decrease with decreasing ionic radii of rare earths. The new type of orthorhombic phase with a distortion along [100] direction of the undistorted tetragonal phase was found for Ln=Nd, Sm, Lu and Y with x=0.2. The low temperature tetragonal phase was observed in the case of Ln=Sm with x=0.3.

引用

页码：451 / 460

页数：10

共 3 条

[1] Studies on reactivity in the solid state between some rare-earth metal oxides Ln2O3 where Ln=Y, La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Lu and metal sulfates(VI) MSO4 where M=Ni, Cu, Zn, Cd
Tomaszewicz, E
JOURNAL OF MATERIALS SCIENCE, 2006, 41 (05) : 1675 - 1680
[2] Studies on reactivity in the solid state between some rare-earth metal oxides Ln2O3 where Ln=Y, La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Lu and metal sulfates(VI) MSO4 where M=Ni, Cu, Zn, Cd
E. Tomaszewicz
Journal of Materials Science, 2006, 41 : 1675 - 1680
[3] TRANSPORT-PROPERTIES AND LOW-TEMPERATURE STRUCTURAL PHASE-TRANSITION AROUND X=0.125 IN LA(2-X-Y)RE(Y)SR(X)CUO(4) (RE-ND, SM, GD, TB)
SUZUKI, T
SERA, M
FUKASE, T
PHYSICA C, 1994, 235 : 1315 - 1316

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