IMPORTANCE OF MAGNETICALLY DERIVED CRYSTAL-FIELD PARAMETERS IN ESTIMATION OF SOME PROPERTIES OF DY2GE2O7

被引：14

作者：

SENGUPTA, A ^{[1
]}

GHOSH, D ^{[1
]}

WANKLYN, BM ^{[1
]}

机构：

[1] UNIV OXFORD,CLARENDON LAB,OXFORD,ENGLAND

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.47.8281

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Results of measurements of magnetic susceptibilities and anisotropies of Dy2Ge2O7 (DyPG) between 300 and 23 K are reported here. Crystal-field (CF) analysis under D5h site symmetry was performed to explain the magnetic results. With use of the parametrized CF interaction and intermediate-coupling formalism, the positions of different spectral lines were calculated and matched with earlier observations. At low temperature DyPG behaves almost like an Ising S = 1/2 system with g parallel-to = 1.293 +/- 0.01 and g perpendicular-to = 10. 301 +/- 0.02. The calculated values of saturated magnetization along the D5h symmetry axis and its perpendicular were found to be 82.58 and 659.41 emu/cm3, respectively. The nuclear hyperfine field and quadrupole interactions (associated with strong asymmetric CF) give rise to appreciable nuclear hyperfine splitting for DyPG. More hyperfine lines than usual were predicted in the Mossbauer spectra.

引用

页码：8281 / 8284

页数：4

共 24 条

[21] FLUX GROWTH OF RARE-EARTH GERMANATES [J].