ENHANCED REMANENCE IN FLASH-ANNEALED ND4FE78B18

被引：14

作者：

ALTOE, MVP ^{[1
]}

LANCAROTTE, MS ^{[1
]}

RECHENBERG, HR ^{[1
]}

MISSELL, FP ^{[1
]}

GONZALEZ, JM ^{[1
]}

机构：

[1] CSIC,INST CIENCIAS MAT MADRID,E-28006 MADRID,SPAIN

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1995年 / 31卷 / 06期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1109/20.489586

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：

Nanocrystalline Nd4Fe78B18 was produced by affixing current leads directly to amorphous ribbons for flash-annealing. Ribbons were annealed in the range T-a = 650-1000 degrees C, for times 10-600 s. Flash-annealed ribbons show higher remanence ratios (M(r)/M(s) congruent to 0.83) than those submitted to conventional furnace (680 degrees C/10 min) annealing (M(r)/M(s) congruent to 0.74). In flash-annealed ribbons, Mossbauer spectroscopy and x-ray diffraction indicated the presence of the Nd2Fe23B3 phase, in addition to Fe3B, Nd2Fe14B, and alpha-Fe. Flash-annealing for short times at high temperatures may give H-c values up to 20% higher than furnace annealing. The isothermal remanent magnetization and the dc demagnetization remanence were found to be in reasonable agreement with the Wohlfarth relation.

引用

页码：3614 / 3616

页数：3

共 9 条

[1] AN EXACT MODEL OF DC JOULE HEATING IN AMORPHOUS METALLIC RIBBONS [J].