Photothermal characterization of multi-layer magnetic materials

Author

Wang, Zhao Qiu ; Newman, Dave M. ; Carey, Roy

Author_Institution

Sch. of Natural & Environ. Sci., Coventry Univ., UK

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

3640

Lastpage

3642

Abstract

In magnetic media thermal transport properties are sensitive to the large internal field associated with the magnetization. Using photoacoustic detection, we show how measurement of the amplitude of thermal waves traversing a magnetic medium provides a technique with the potential to separate the magnetic characteristics of different layers in a multi-layer structure. The technique is demonstrated by recovering the hysteresis loops of magnetic films in tri-layer structures with thick (100 nm) nonmagnetic capping layers

Keywords

magnetic hysteresis; magnetic multilayers; magnetic variables measurement; photothermal effects; hysteresis loops; large internal field; magnetic characteristics; magnetic films; magnetization; multilayer magnetic materials; nonmagnetic capping layers; photoacoustic detection; photothermal characterization; thermal wave amplitude; trilayer structures; Magnetic films; Magnetic hysteresis; Magnetic materials; Magnetic properties; Magnetic separation; Magnetization; Magnetooptic effects; Magnetooptic recording; Magnetostatic waves; Thermal conductivity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908926

Filename

908926