Longitudinal Magnetostriction and Its Dependence on the Method of Demagnetization in Single Crystals and a Polycrystal of 0.5 Percent Aluminium Iron, II. The [110] Single Crystals

• Miyasawa Ryôfu

  The Faculty of Science, Hirosaki University

Abstract

The longitudinal magnetostriction of the [110] rod single crystals of iron containing 0.5% Al has been studied at ordinary temperatures, in the thermally demagnetized state and in the alternating-current demagnetized state, using the optical lever method. It has been found that the magnetostrictive behaviors of these specimens depend markedly on the method of demagnetization, and, from the magnetostriction vs. magnetization curves in the thermally demagnetized state, the volume fraction of domains with magnetization vectors along the direction of easy magnetization nearest to the rod axis in the unmagnetized state ranges from 0.19 to 0.23; furthermore, the deviation of the domain distribution in the state of remanent magnetization from that governed by Kaya’s rule has been evaluated. Moreover, the fact that the magnetostriction vs. magnetic field curves in the magnetization range of rotation are linear, irrespective of the method of demagnetization, can be explained by the experimental results that the square of the magnetization is approximately proportional to the magnetic field, but to the magnetostriction as well. From the above considerations, an attempt has been made for the determination of the magnetostrictive constant, λ₁₁₁.

Journal

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 10 (5), 328-334, 1969

  The Japan Institute of Metals

Keywords

• General Engineering

Details

• CRID: 1390282680094115328
• NII Article ID: 130003484977
• DOI: 10.2320/matertrans1960.10.328
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/10/5/10_5_328/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed