Microstructure and magnetism in barium strontium titanate (BSTO)-barium hexaferrite (BaM) multilayers

被引：13

作者：

Frey, NA

Heindl, R

Srinath, S

Srikanth, H

Dudney, NJ

机构：

[1] Univ S Florida, Dept Phys, Phys Mat Lab, Tampa, FL 33620 USA

[2] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA

来源：

MATERIALS RESEARCH BULLETIN | 2005年 / 40卷 / 08期

基金：

美国国家科学基金会;

关键词：

multilayers; magnetic materials; sputtering; magnetic properties; microstructure;

D O I：

10.1016/j.materresbull.2005.04.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High quality multilayers of barium ferrite (BaM) and barium strontium titanate (BSTO) were grown in optimized conditions on thermally oxidized Si(1 0 0) and Al2O3 substrates using magnetron sputtering. As-grown films were amorphous and different annealing procedures were explored to stabilize crystalline phases. BSTO and BaM phases were identified using X-ray diffraction and cross-sectional scanning electron micrographs showed sharp interfaces between BSTO and BaM layers. Magnetic hysteresis loops obtained at various temperatures and field orientations showed a large coercivity (similar to 2500 Oe) consistent with the hard magnetic hexaferrite component. Hysteresis loops also revealed the distinct influence of magnetocrystalline and shape anisotropies at different temperature ranges. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：1286 / 1293

页数：8

共 21 条

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