Impurity displacement of Fe3+ ion in Al2O3 crystal

被引：0

作者：

Zheng, WC ^{[1
]}

机构：

[1] Sichuan Univ, Dept Mat Sci, Chengdu 610064, Peoples R China

[2] Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 1998年 / 245卷 / 02期

关键词：

local environment; electron paramagnetic resonance; crystal-field theory; superposition model; Fe3+; Al2O3;

D O I：

暂无

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

By using the spin-orbit coupling mechanism and the superposition model, the local environment of the Fe3+ ion in Al2O3 crystal is studied from its EPR data. From the studies, it is found that the Fe3+ ion does not occupy the exact Al3+ site, but, due to its larger size than the replaced host ion, it is forced to move towards the bigger oxygen triangle. It appears that the displacement direction of impurity ion in corundum-type structure depends not only upon the charge of impurity, but also upon its size. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：119 / 122

页数：4

共 16 条

[1] PARAMAGNETIC RESONANCE OF FE-3+ IN SAPPHIRE AT LOW TEMPERATURES [J].

BOGLE, GS ;

SYMMONS, HF .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1959, 73 (471) :531-532

[2]

HEMING M, 1987, ELECTRONIC MAGNETIC, P163

[3] ELECTRON-PARAMAGNETIC RESONANCE OF MN-2+ IN ORTHORHOMBIC AND HIGHER SYMMETRY CRYSTALS [J].

JAIN, VK ;

LEHMANN, G .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 1990, 159 (02) :495-544

[4] EXCHANGE EFFECTS IN OPTICAL-ABSORPTION SPECTRUM OF FE3+ IN AL2O3 [J].

KREBS, JJ ;

MAISCH, WG .

PHYSICAL REVIEW B, 1971, 4 (03) :757-&

[5] Lattice location of rare-earth ions in LiNbO3 [J].

Lorenzo, A ;

Jaffrezic, H ;

Roux, B ;

Boulon, G ;

GarciaSole, J .

APPLIED PHYSICS LETTERS, 1995, 67 (25) :3735-3737

[6] COMPARISON OF CRYSTAL FIELDS AND OPTICAL SPECTRA OF CR2O3 AND RUBY [J].

MCCLURE, DS .

JOURNAL OF CHEMICAL PHYSICS, 1963, 38 (09) :2289-&

[7]

NEWMAN DJ, 1975, ADV PHYS, V24, P793, DOI 10.1080/00018737500101511

[8] ION-BEAM CHANNELING YIELDS OF HOST AND IMPURITY ATOMS IN LINBO3 - COMPUTER-SIMULATIONS [J].

REBOUTA, L ;

SMULDERS, PJM ;

BOERMA, DO ;

AGULLOLOPEZ, F ;

DASILVA, MF ;

SOARES, JC .

PHYSICAL REVIEW B, 1993, 48 (06) :3600-3610

[9] THE ELECTRONIC-STRUCTURES OF FE-3+ COORDINATION SITES IN IRON-OXIDES - APPLICATIONS TO SPECTRA, BONDING, AND MAGNETISM [J].

SHERMAN, DM .

PHYSICS AND CHEMISTRY OF MINERALS, 1985, 12 (03) :161-175

[10] STRUCTURE OF TRANSITION-METAL-OXYGEN-VACANCY PAIR CENTERS [J].

SIEGEL, E ;

MULLER, KA .

PHYSICAL REVIEW B, 1979, 19 (01) :109-120

← 1 2 →