Experimental and micromagnetic first-order reversal curves analysis in NdFeB-based bulk "exchange spring'' - type permanent magnets

被引：52

作者：

Chiriac, Horia

Lupu, Nicoleta

Stoleriu, Laurentiu

Postolache, Petronel

Stancu, Alexandru

机构：

[1] Alexandru Ioan Cuza Univ, Dept Solid State & Theoret Phys, Iasi 700506, Romania

[2] Natl Inst Res & Dev Tech Phys, Iasi 700050, Romania

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 316卷 / 02期

关键词：

magnetic hysteresis; magnetic material; permanent magnet; modeling;

D O I：

10.1016/j.jmmm.2007.02.049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper we present the results of applying the first-order reversal curves (FORC) diagram experimental method to the analysis of the magnetization processes of NdFeB-based permanents magnets. The FORC diagrams for this kind of exchange spring magnets show the existence of two magnetic phases - a soft magnetic phase and a hard magnetic one. Micromagnetic modeling is used for validating the hypotheses regarding the origin of the different features of the experimental FORC diagrams. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：177 / 180

页数：4

共 9 条

[1]

KELLY PE, 1989, IEEE T MAGN, V25, P3880

[2] THE EXCHANGE-SPRING MAGNET - A NEW MATERIAL PRINCIPLE FOR PERMANENT-MAGNETS [J].

KNELLER, EF ;

HAWIG, R .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (04) :3588-3600

[3] Magnetic properties of bulk nanocomposite permanent magnets based on NdDyFeB alloys with additions [J].

Marinescu, M ;

Chiriac, H ;

Grigoras, M .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2005, 290 :1267-1269

[4]

MAYERGOYZ ID, 1990, MATH MODELS HYSTERES

[5] Glass formability of Fe-Co-Pr-Dy-Zr-B alloys and magnetic properties following devitrification [J].

Pawlik, P ;

Davies, HA .

SCRIPTA MATERIALIA, 2003, 49 (08) :755-760

[6] Characterizing interactions in fine magnetic particle systems using first order reversal curves [J].

Pike, CR ;

Roberts, AP ;

Verosub, KL .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (09) :6660-6667

[7] About the magnetic aftereffect. [J].

Preisach, F. .

ZEITSCHRIFT FUR PHYSIK, 1935, 94 (5-6) :277-302

[8] Micromagnetic and Preisach analysis of the First Order Reversal Curves (FORC) diagram [J].

Stancu, A ;

Pike, C ;

Stoleriu, L ;

Postolache, P ;

Cimpoesu, D .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) :6620-6622

[9] Bulk nanocomposite permanent magnets produced by crystallization of Fe66.5Co10Pr3.5B20 bulk glassy alloy [J].

Zhang, W ;

Inoue, A .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :8834-8836

← 1 →