STUDIES OF THE NI3+-AL2O3 SYSTEM BY THERMAL-CONDUCTIVITY MEASUREMENTS

被引：16

作者：

SALCE, B

DEGOER, AM

机构：

[1] Service Basses Temperatures, CENG, 38041 Grenoble Cedex

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 11期

关键词：

D O I：

10.1088/0022-3719/12/11/018

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A detailed investigation of the phonon-spin interaction in the system Ni3+:Al2O3 has been carried out by low-temperature thermal conductivity measurements on single crystals (0.05 to 100K). Using the theoretical model of Abou-Ghantous et al. (1974) to describe the vibronic energy levels, a complete quantitative analysis of the data has been achieved with two resonant phonon scatterings at 0.47 cm-1 and 55 cm-1, taking into account the residual strains which play a major role in the low-frequency resonance. From the measurements with applied uniaxial stress the ion-lattice coupling constant has been determined as V Eb=60000+or-9000 cm-1. It has been also possible to estimate the magnitude of the E-type random strains ( approximately=10 -5) and the concentration of the Ni3+ ions in the crystals (0.2 to 5 ppm weight).

引用

页码：2081 / 2101

页数：21

共 25 条

[11]

GOER AMD, 1969, J PHYS-PARIS, V30, P389

[12]

GOER AMD, 1972, P INT C PHONON SCATT, P260

[13]

GUCKELSBERGER K, 1973, THESIS GRENOBLE

[14] EFFECT OF LINEAR JAHN-TELLER COUPLING ON PARAMAGNETIC RESONANCE IN A 2E STATE [J].

HAM, FS .

PHYSICAL REVIEW, 1968, 166 (02) :307-&

[15]

KLEMENS PG, 1958, SOLID ST PHYS, V5, P495

[16]

KNOWLES A, 1976, THESIS U NOTTINGHAM

[17] PHONON SCATTERING BY NI3+ IONS IN AL2O3 [J].

LOCATELLI, M ;

GOER, AMD .

SOLID STATE COMMUNICATIONS, 1974, 14 (02) :111-117

[18]

MIMS W, 1976, LINEAR ELECTRIC FIEL, P298

[19]

RAMPTON VW, 1975, 2ND P INT C PHON SCA, P178

[20] EFFECT OF UNIAXIAL STRESS ON THERMAL-CONDUCTIVITY AT LOW-TEMPERATURE OF AL-2O-3 AND MGO DOPED WITH 3DN IONS [J].

RIVALLIN, J ;

SALCE, B ;

DEGOER, AM .

SOLID STATE COMMUNICATIONS, 1976, 19 (01) :9-13

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