Magnetic properties of polycrystalline Sr-M and Pb-M hexaferrites thin films grown by pulsed laser deposition on Si/SiO2 substrates

被引：5

作者：

Faloh-Gandarilla, JC

Díaz-Castañón, S

Leccabue, F

Watts, BE

机构：

[1] Univ La Habana, Fac Fis, Inst Mat & React, Magnetism Lab, Havana 10400, Cuba

[2] IPICyT, Mat Avanzados, San Luis Potosi, SLP, Mexico

[3] CNR, Inst Maspec, I-43010 Parma, Italy

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 369卷 / 1-2期

关键词：

M-type hexaferrites; hexaferrites thin films; permanent magnets;

D O I：

10.1016/j.jallcom.2003.09.102

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pulsed laser ablation deposition has been used to grow polycrystalline Pb-M and Sr-M thin films with high coercivity on Si/SiO2 substrates. The influence of the substrate temperature (550-800 degreesC) and the oxygen pressure (1.0-3.0 mbar) on the magnetic properties during the deposition is discussed. The Pb-M hexaferrite thin films crystallise at the same temperature range as Sr-M thin films, but with inferior coercivities. In both cases. the best values of iHc (3.8 kOe, Pb-M films and 5.0 kOe for Sr-M thin film) are very close to the best value of sintered ceramic hexaferrite (5.0 kOe Pb-M and 6.0 kOe Sr-M). The isotropic character of the films was confirmed by a Mr/Ms behaviour near to 0.5. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：195 / 197

页数：3

共 10 条

[1] Magnetic properties of polycrystalline hexaferrites thin films grown by metal-organic decomposition and pulsed laser deposition:: An useful correlation [J].