MOSSBAUER-SPECTRA AND MAGNETIC-PROPERTIES OF SM2(CO, FE)17 ALLOYS

被引：2

作者：

NAGAMINE, LCCM ^{[1
]}

RECHENBERG, HR ^{[1
]}

RAY, AE ^{[1
]}

机构：

[1] UNIV DAYTON,RES INST,DAYTON,OH 45469

来源：

HYPERFINE INTERACTIONS | 1991年 / 67卷 / 1-4期

关键词：

D O I：

10.1007/BF02398195

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Sm2(Co1-xFex)17 alloys form the basis of a new class of permanent magnets. We have investigated these materials with Fe-57 Mossbauer spectroscopy. Alloys with x less-than-or-equal-to 0.5 have easy-axis anisotropy at room temperature; their spectra can be fitted with sextets corresponding to the four nonequivalent sites of the Th2Zn17 structure. Fe hyperfine fields increase with increasing Fe concentration. An average Fe moment of almost-equal-to 2.0-mu(B) is estimated. Fe atoms show a strong preference for occupying the 2c dumbbell sites. This preference is reduced in Zr-containing alloys used for magnet preparation.

引用

页码：523 / 527

页数：5

共 13 条

[1] INTERMETALLIC COMPOUNDS OF RARE-EARTH AND 3D TRANSITION-METALS [J].