EPR study of the hyperfine structure of Yb3+ ion in Pb1-xYbxS, Pb1-xYbxSe, and Pb1-xYbxTe single crystals

被引:26
作者
Isber, S
Charar, S
Gratens, X
Fau, C
Averous, M
Misra, SK
Golacki, Z
机构
[1] CONCORDIA UNIV,DEPT PHYS,MONTREAL,PQ H34 1H8,CANADA
[2] POLISH ACAD SCI,INST PHYS,PL-02668 WARSAW,POLAND
来源
PHYSICAL REVIEW B | 1996年 / 54卷 / 11期
关键词
D O I
10.1103/PhysRevB.54.7634
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
X-band (9.56 GHz) electron paramagnetic resonance (EPR) measurements were performed on Pb1-xYbxS, Pb1-xYbxSe, and Pb1-xYbxTe samples (x similar to 0.5-2%) at liquid-helium temperatures to study hyperfine transitions, and to estimate the value of the effective Lande factor g and the hyperfine-interaction constants of the two isotopes Yb-171 and Yb-173 possessing nonzero nuclear magnetic moments. The data indicated that the site symmetry at the Yb3+ ion in all the host crystals, Pb1-xYbxS, Pb1-xYbxSe, and Pb1-xYbxTe, is octahedral. The EPR line positions were found not to vary with the orientation of the external magnetic field, indicating that the g tensors and the hyperfine-interaction tensors are isotropic. The Yb3+ Lande factors (g) were deduced to have the values 2.545 +/- 0.005, 2.585 +/- 0.005, and 2.525 +/- 0.005, respectively, in Pb1-xYbxS, Pb1-xYbxSe, and Pb1-xYbxTe. The calculated Lande factors are slightly different from these; the degree of covalent bonding was estimated from the differences in the experimental and calculated Lande factors, The values of the hyperfine-interaction constants for Yb-171(3+) and Yb-173(3+) isotopes were estimated to have the values (171)A = 138 +/- 2 mT, (173)A = 39 +/- 1 mT in Pb1-xYbxSe, (171)A = 59 +/- 2 mT, (173)A = 19 +/- 1 mT in Pb1-xYbxTe, and (171)A = 60 +/- 2 mT in Pb1-xYbxS.
引用
收藏
页码:7634 / 7636
页数:3
相关论文
共 8 条
[1]  
Abragam A., 1971, ELECT PARAMAGNETIC R
[2]   ENDOR OF 171YB3+ AND 173YB3+ ON CUBIC SITES IN CALCIUM FLUORIDE [J].
BAKER, JM ;
BLAKE, WBJ ;
COPLAND, GM .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1969, 309 (1496) :119-&
[3]   PARAMAGNETIC RESONANCE OF X-IRRADIATED CAF2 - AND OF CAF2 - YB [J].
HAYES, W ;
TWIDELL, JW .
JOURNAL OF CHEMICAL PHYSICS, 1961, 35 (04) :1521-&
[4]   EPR-SPECTRA AND MAGNETIZATION OF EU2+ IONS IN PBSE [J].
ISBER, S ;
CHARAR, S ;
FAU, C ;
MATHET, V ;
AVEROUS, M ;
GOLACKI, Z .
PHYSICAL REVIEW B, 1995, 52 (03) :1678-1682
[5]   HYPERFINE-STRUCTURE OF GD3+ IN BI2TE3 FROM EPR [J].
ISBER, S ;
CHARAR, S ;
MATHET, V ;
FAU, C ;
AVEROUS, M .
PHYSICAL REVIEW B, 1995, 51 (21) :15578-15580
[6]   AXIAL ANISOTROPY OF CO2+ IN CDSE FROM THE MAGNETIZATION STEP AND EPR [J].
ISBER, S ;
AVEROUS, M ;
SHAPIRA, Y ;
BINDILATTI, V ;
ANISIMOV, AN ;
OLIVEIRA, NF ;
ORERA, VM ;
DEMIANIUK, M .
PHYSICAL REVIEW B, 1995, 51 (21) :15211-15217
[7]   Multiband conduction in Pb1-xYbxTe [J].
Mahoukou, F ;
DosSantos, O ;
Fau, C ;
Charar, S ;
Averous, M ;
Golacki, Z .
PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1996, 195 (02) :511-518
[8]   EVALUATION OF SPIN HAMILTONIAN PARAMETERS OF ELECTRON-NUCLEAR SPIN-COUPLED SYSTEMS FROM ELECTRON-PARAMAGNETIC-RES DATA BY THE METHOD OF LEAST-SQUARES FITTING [J].
MISRA, SK .
PHYSICA B & C, 1983, 121 (1-2) :193-201