Polarized Mossbauer study of particle orientation in magnetic recording tapes

Author

Yang, Xie-Long ; Jiang, Ke-Yu ; Wu, Zhen ; Sun, Xiao-Duo

Author_Institution

Dept. of Phys., East China Normal Univ., Shanghai, China

Volume

25

Issue

1

fYear

1989

fDate

1/1/1989 12:00:00 AM

Firstpage

684

Lastpage

686

Abstract

Unpolarized Mossbauer study of particle orientation in magnetic recording tapes requires the measurements of the tape samples from different directions. This requirement may introduce appreciable saturation effects, and may, in some cases, lead to destruction of the tapes´ original magnetization orientation. The authors present a more effective technique which uses polarized recoil-free γ-rays to identify the particle orientations. Two examples of the application of the technique to γ-Fe₂O₃ tapes with different particle orientations are discussed, with results conforming to those of magnetic measurements

Keywords

Mossbauer effect; ferrimagnetic properties of substances; magnetic recording; magnetic tapes; polarisation; γ-phase; Fe₂O₃; magnetic recording tapes; particle orientation; polarised Mossbauer study; polarized recoil-free γ-rays; saturation effects; Absorption; Iron; Magnetic field measurement; Magnetic materials; Magnetic recording; Magnetic variables measurement; Particle measurements; Polarization; Saturation magnetization; Sun;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.22622

Filename

22622