Investigations of phase transitions in (NH4)(3)H(SO4)(2) crystal by means of Mn2+ EPR spectra

被引：3

作者：

Bednarski, W

Waplak, S

机构：

[1] Institute of Molecular Physics, Polish Academy of Sciences, 60-179 Poznań

来源：

ACTA PHYSICA POLONICA A | 1996年 / 90卷 / 06期

关键词：

D O I：

10.12693/APhysPolA.90.1185

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

EPR of Mn2+ impurity ion in the (NH4)(3)H(SO4)(2) crystal is studied in the temperature range 80-420 K. It is shown that Mn2+ substitutes NH4+(I) ion and is coordinated in deformed oxygen octahedron in which takes two ''off-center'' positions. Its spin-Hamiltonian parameters and direction cosines of crystal field are determined. The successive EPR line splitting for three phase transitions is discussed.

引用

页码：1185 / 1192

页数：8

共 18 条

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Abragam A., 1970, ELECT PARAMAGNETIC R

[2]

AIZU K, 1970, J PHYS SOC JPN, V28, P704

[3] ELECTRON-PARAMAGNETIC-RES STUDIES OF PHASE-TRANSITIONS IN (NH4)3H(SO4)2 SINGLE-CRYSTALS [J].