Microstructure and Magnetic Properties of Melt-Spun Nd-Rich Nd-Fe Alloys

被引：2

作者：

Menushenkov, Vladimir P. ^{[1
]}

Shchetinin, Igor V. ^{[1
]}

Gorshenkov, Mikhail V. ^{[1
]}

Savchenko, Alexander G. ^{[1
]}

Ketov, Sergey V. ^{[2
]}

机构：

[1] Natl Univ Sci & Technol MISIS, Moscow 119049, Russia

[2] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

IEEE MAGNETICS LETTERS | 2016年 / 7卷

关键词：

Nanotechnology; hard magnetic materials; melt spun Nd-Fe ribbon; magnetization; coercivity; microstructure; HIGH-COERCIVITY; PR-FE; PHASE; SYSTEM;

D O I：

10.1109/LMAG.2015.2512980

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The effect of composition on the magnetic properties and microstructure of Nd-rich Nd-Fe alloys prepared by melt-spinning were investigated. Several magnetic phases with ordering temperatures at about 10, 37, 48, and 420480 K were detected from the temperature dependence of magnetization. The first transition is due to the presence of the double-hexagonal-close-packed Nd phase. The magnetic transitions at 37 and 48 K may be related to the face-centered-cubic Nd-based phase and the Nd-rich nanocrystals. The high-temperature ferromagnetic-paramagnetic transitions at 420-480 K may be connected with the amorphous-like Fe-Nd phase enriched in Fe, which is observed by transmission electron microscopy in the intergranular regions. At temperatures below 100 K, the magnetization of the Nd-Fe ribbons did not saturate in a magnetic field as high as 7200 kA/m. The correlations between the microstructure and coercivity of the Nd-rich Nd-Fe ribbons are discussed.

引用

页数：4

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