Magnetic parameters of R2Fe14B compounds with nanograin structure

被引：1

作者：

Tereshina, I. S. ^{[1
]}

Burkhanov, G. S. ^{[1
]}

Dobatkin, S. V. ^{[1
]}

Chistyakov, O. D. ^{[1
]}

Tereshina, E. A. ^{[2
]}

Drulis, H. ^{[3
]}

机构：

[1] RAS, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia

[2] Acad Sci, Inst Phys, Prague, Czech Republic

[3] Inst Low Temperatures & Struct Res, PL-50950 Wroclaw, Poland

来源：

NANOMATERIALS BY SEVERE PLASTIC DEFORMATION IV, PTS 1 AND 2 | 2008年 / 584-586卷

关键词：

high-purity rare-earth metals; intermetallic compounds; severe plastic deformation; magnetic parameters;

D O I：

10.4028/www.scientific.net/MSF.584-586.950

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High-purity compounds R2Fe14B (R = Y, Gd, Tb, Dy, Ho and Er) were prepared by arc melting using rare-earth metals purified by vacuum distillation-sublimation. The compounds R2Fe14B are single-phase and have well-defined directional structure. Nanocrystalline structure was formed by severe plastic deformation of the samples by means of torsion for 5 turns on the Bridgeman anvil under the pressure of 4 GPa at room temperature. The performed investigations of magnetic properties of these compounds allowed us to obtain reliable quantitative data on the intrinsic magnetic parameters, such as saturation magnetization, Curie temperature, the remanent magnetization and coercive force. The enhancement of the remanent magnetization was observed for R2Fe14B in nanocrystalline states compared with the crystalline samples due to the intercrystalline exchange interactions.

引用

页码：950 / 954

页数：5

共 7 条

[1]

Chistyakov O.D., 1994, VYSOKOCHIST V VA, V3, P57

[2]

Coey J.M.D., 1996, Rare-earth Iron Permanent Magnets

[3] R2FE14B MATERIALS - INTRINSIC-PROPERTIES AND TECHNOLOGICAL ASPECTS [J].

HERBST, JF .

REVIEWS OF MODERN PHYSICS, 1991, 63 (04) :819-898

[4]

KORZNIKOVA GF, 2002, FIZ TVERD TELA, V44, P1646

[5]

Liu S, 2002, RARE EARTH MAGNETS AND THEIR APPLICATIONS, P939

[6]

TERESHINA I, 2006, MAGNETIC NANOSTRUCTU, P123

[7]

Валиев Р.З., 2006, [Российские нанотехнологии, Nanotechnologies in Russia, Rossiiskie nanotekhnologii], V1, P208

← 1 →