Coercivity and microstructure of Mn-Ni-N sintered alloys

S. Sugimoto, K. Isogai, T. Hattori, H. Matsumoto, S. Yoshida, N. Tezuka

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

This paper describes the relationship between magnetic properties and microstructure in Mn-Ni-N sintered alloys. The Mn-Ni-N alloy heat-treated at 1200 °C for 3 h and then jacket-quenched in a nitrogen atmosphere, exhibits a high coercivity of 352 kAm-1. The EDX analysis reveals that the sample jacket-quenched and then annnealed in nitrogen, consists of two phases with different Ni content forming a lamellar structure. From TEM observations, the jacket-quenched sample contains many stacking faults and twins with nano-meter size. Therefore, it is considered that they play a role as pinning sites of domain wall motion and high coercivity observed with the quenched sample is casued by the domain wall pinning mechanism.

Original languageEnglish
Pages (from-to)4573-4576
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume4
Issue number12
DOIs
Publication statusPublished - 2007 Dec 1
EventInternational Symposium on Advanced Magnetic Materials and Appilications, (ISAMMA 2007) - Jeju, Korea, Republic of
Duration: 2007 May 282007 Jun 1

ASJC Scopus subject areas

  • Condensed Matter Physics

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