LATTICE SITE INVESTIGATIONS FOR MG IN LINBO3 BY COMBINED RBS-PIXE-NRA CHANNELING EXPERIMENTS

被引：22

作者：

KLING, A ^{[1
]}

KOLLEWE, D ^{[1
]}

GRABMAIER, BC ^{[1
]}

机构：

[1] SIEMENS AG,ZENT FORSCH & ENTWICKLUNG,W-8000 MUNICH 83,GERMANY

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1992年 / 64卷 / 1-4期

关键词：

D O I：

10.1016/0168-583X(92)95471-3

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The lattice position of magnesium in lithium niobate has been investigated for single crystals doped with MgO (between 0 and 9 mol% in the congruent melt) using a combination of RBS, PIXE and NRA with channeling. Mg seems to be collinear with the niobium and lithium in the c-axis for the whole concentration range. Concentration dependent effects with a threshold of about 1 mol% MgO for other axes have been observed. For low concentrations experimental results and computer simulations performed with our recently developed program CASSIS indicate that magnesium occupies an octahedral site near lithium while for higher concentrations the regular lithium site and an octahedral position near niobium is found to be occupied.

引用

页码：232 / 236

页数：5

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