Anomalous variation of coercivity with annealing in nanocrystalline NiZn ferrite films

被引：60

作者：

Desai, M

Prasad, S ^{[1
]}

Venkataramani, N

Samajdar, I

Nigam, AK

Keller, N

Krishnan, R

Baggio-Saitovitch, EM

Pujada, BR

Rossi, A

机构：

[1] Indian Inst Technol, Dept Phys, Mumbai 400076, India

[2] Indian Inst Technol, Adv Ctr Res Elect, Mumbai 400076, India

[3] Indian Inst Technol, Dept Met Engn & Mat Sci, Mumbai 400076, India

[4] Tata Inst Fundamental Res, Colaba 400005, Mumbai, India

[5] Lab Magnetisme & Opt Versailles, CNRS, F-78935 Versailles, France

[6] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 91卷 / 10期

关键词：

D O I：

10.1063/1.1447504

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The sputter deposited NiZn ferrite thin films were studied as a function of annealing temperature. The magnetization showed a monotonic increase with increasing annealing temperature. The coercivity shows a minimum at annealing temperature of 400 degreesC and shows a value of 14 Oe. Transmission electron microscopy study indicated that the grain size increases from similar to3 nm for the as-deposited case to similar to15 nm for the film annealed at 800 degreesC. The observed coercivity behavior could be attributed to the defects present in the films, the change in cation distribution, and the grain growth. (C) 2002 American Institute of Physics.

引用

页码：7592 / 7594

页数：3

共 14 条

[1] FERRITE PLATING IN AQUEOUS-SOLUTION - NEW TECHNIQUE FOR PREPARING MAGNETIC THIN-FILM [J].