ANOMALOUS SPIN-LATTICE RELAXATION IN INPFE3+ AND BAFBREU2+ EXAMINED WITH OPTICAL-DETECTION OF ELECTRON-PARAMAGNETIC RESONANCE

被引：7

作者：

KOSCHNICK, FK ^{[1
]}

RAC, M ^{[1
]}

SPAETH, JM ^{[1
]}

EACHUS, RS ^{[1
]}

机构：

[1] EASTMAN KODAK CO,RES LABS,ROCHESTER,NY 14650

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1993年 / 5卷 / 06期

关键词：

D O I：

10.1088/0953-8984/5/6/010

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The Eu2+ defect in BaFBr and the Fe3+ defect in InP were investigated by optical detection of electron paramagnetic resonance (ODEPR). For both defects allowed (DELTAm(s) = +/-1) and forbidden (DELTAm(s) = +/-2) ODEPR transitions were observed. Some of the allowed ODEPR transitions showed an anomalous change of sip indicating a spin polarization enhancement. This anomalous behaviour of both spin systems (S = 7/2 for Eu2+ in BaFBr and S = 5/2 for Fe3+ in InP) arises from spin-lattice relaxations within the Eu2+ and Fe3+ Zeeman levels which operate faster for forbidden (DELTAm(s) = +/-2) transitions than for allowed transitions. Using the appropriate rate equations describing the two spin systems and taking into account strong forbidden spin-lattice relaxations, the measured ODEPR effects were explained.

引用

页码：733 / 746

页数：14

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