RELATIONSHIP BETWEEN THE ELECTRICAL-PROPERTIES AND CRYSTAL-STRUCTURE OF (LA1-XNDX)CRO3 (0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-1.0)

被引:31
作者
TAGUCHI, H [1 ]
NAGAO, M [1 ]
TAKEDA, Y [1 ]
机构
[1] MIE UNIV, FAC EDUC, DEPT CHEM, TSU, MIE 514, JAPAN
关键词
D O I
10.1006/jssc.1995.1034
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Perovskite-type (La1-xNdx)CrO3 has the orthorhombic GdFeO3- type structure with the space group Pnma. The electrical resistivity of (La1-xNdx)CrO3 (0 less than or equal to x less than or equal to 1.0) was measured in the temperature range 300 to 1000 K. Although the cell volume decreases linearly with increasing x, significant compositional dependence on electrical resistivity is not found. (La1-xNdx)CrO3 is a p-type semiconductor with an activation energy of ca. 0.26 to ca. 0.28 eV. Rietveld analysis and XPS measurements indicate that each CrO6 octahedron has little distortion and that the decrease in the angles for Cr-O(1)-Cr or Cr-O(2)-Cr is caused by the linear decrease in the cell volume. (C) 1995 Academic Press, Inc.
引用
收藏
页码:236 / 241
页数:6
相关论文
共 13 条
[1]   CATALYTIC ACTIVITY OF RARE-EARTH ORTHO-FERRITES AND ORTHOCHROMITES [J].
ARAKAWA, T ;
TSUCHIYA, S ;
SHIOKAWA, J .
MATERIALS RESEARCH BULLETIN, 1981, 16 (01) :97-103
[2]  
Cullity B. D., 1978, ELEMENTS XRAY DIFFRA, P506
[4]  
GOODENOUGH JB, 1970, LANDOLTBORNSTEIN, V4, P228
[5]   ELECTRONEGATIVITIES OF THE ELEMENTS [J].
GORDY, W ;
THOMAS, WJO .
JOURNAL OF CHEMICAL PHYSICS, 1956, 24 (02) :439-444
[6]  
IZUMI F, 1985, J CRYSTALLOGR SOC JA, V27, P23
[7]   ELECTRIC AND MAGNETIC PROPERTIES OF STRONTIUM TERRATES [J].
MACCHESNEY, JB ;
SHERWOOD, RC ;
POTTER, JF .
JOURNAL OF CHEMICAL PHYSICS, 1965, 43 (06) :1907-+
[8]   STRUCTURE DETERMINATION OF CAMNO3 AND CAMNO2.5 BY X-RAY AND NEUTRON METHODS [J].
POEPPELMEIER, KR ;
LEONOWICZ, ME ;
SCANLON, JC ;
LONGO, JM ;
YELON, WB .
JOURNAL OF SOLID STATE CHEMISTRY, 1982, 45 (01) :71-79
[9]   ELECTRICAL TRANSPORT IN RARE EARTH ORTHO CHROMITES, ORTHO MANGANITES AND ORTHO FERRITES [J].
RAO, GVS ;
WANKLYN, BM ;
RAO, CNR .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1971, 32 (02) :345-&
[10]  
RUIZ JS, 1967, CR ACAD SCI B PHYS, V264, P1271