CRYSTAL-GROWTH, IR AND RAMAN-SPECTRA, THERMAL-DECOMPOSITION AND MAGNETIC-PROPERTIES OF KPR(CRO4)2, KND(CRO4)2, KSM(CRO4)2

被引:11
作者
BUENO, I [1 ]
GARCIA, O [1 ]
PARADA, C [1 ]
PUCHE, RS [1 ]
机构
[1] CSIC, INST QUIM INORGAN, E-28006 MADRID, SPAIN
来源
JOURNAL OF THE LESS-COMMON METALS | 1988年 / 139卷 / 02期
关键词
HYDROTHERMAL SYNTHESIS - POTASSIUM RARE EARTH CHROMATE - THERMAL DECOMPOSITION;
D O I
10.1016/0022-5088(88)90007-0
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The double chromates of formula KLn(CrO//4)//2 (Ln EQUVLNT Pr, Nd, Sm) were prepared as single crystals by hydrothermal synthesis from the oxides Pr//6O//1//1, Nd//2O//3 and Sm//2O//3 respectively and K//2Cr//2O//7 solution at 150 degree C in sealed tubes. These compounds were also obtained as microcrystalline powders in the above-mentioned hydrothermal process and by solid reaction of the oxides Pr//6O//1//1, Nd//2O//3 and Sm//2O//3 with KNO//3 at 450 degree C. These materials are isostructural with KLa(CrO//4)//2 which crystallizes in the monoclinic system with space group P2//1/c and Z equals 4. Crystallographic data, IR and Raman spectra, thermal decomposition and magnetic properties of these compounds were studied.
引用
收藏
页码:261 / 271
页数:11
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