POSITRON-ANNIHILATION STUDY OF SPIN-CROSSOVER IN [FEXZN1-X(PTZ)(6)](BF4)(2) SINGLE-CRYSTALS

被引：17

作者：

VERTES, A ^{[1
]}

SUVEGH, K ^{[1
]}

HINEK, R ^{[1
]}

GUTLICH, P ^{[1
]}

机构：

[1] UNIV MAINZ, INST ANORGAN CHEM & ANALYT CHEM, W-6500 MAINZ, GERMANY

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1994年 / 55卷 / 11期

关键词：

POSITRON ANNIHILATION SPECTROSCOPY; PHASE TRANSITIONS;

D O I：

10.1016/0022-3697(94)90209-7

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Positron lifetime measurements were carried out on [FexZn1-x(ptz)(6)](BF4)(2) single crystals in the temperature range of 72-300 K. Complementary Doppler broadening spectra were also recorded at room temperature. The probability of the formation of ortho-positronium (o-Ps) (lifetime 500-1400 ps) was found to be between 10-30%. It was established that the electron spin state transformation can be monitored by positron lifetime spectroscopy also in the solid state.

引用

页码：1269 / 1275

页数：7

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