应用穆斯堡尔效应及正电子湮没技术，对Fe-B（B

15~21

at%）及Fe

82

B

13

Si

5

非晶合金进行了分析，其穆斯堡尔谱呈现参数连续变化的六指峰。经计算机解得的内场分布

P

（

H

i

）表明，

P

（

H

i

）在Fe-B系中与B的含量有关；而

P

（

H

i

）在Fe

82

B

13

Si

5

中则因不同热处理而不同。Fe-B

15

和经过磁场退火的Fe

82

B

13

Si

5

都呈现出高而较窄的

P

（

H

i

）分布，Fe-B

15

系中

P

（

H

i

）的最大内场

H

i

移向低场的一侧。对在Fe

82

B

13

Si

5

中的正电子平均湮没寿命，则经在磁场中热处理后为最大。实验结果表明，Fe-B系的热膨胀系数在B的含量为15%处为极小值；而Fe

L

（低自旋铁百分数）在B含量为15～16%处有极大值。这就指出Fe

8-

B

15

具有大的自发体磁致伸缩

W

s

、极小的热膨胀系数、优异的因瓦特性。我们按马歇尔方程计算其饱和磁矩

M

s

，它比B＞15%的Fe-B系要小。从分析可知，因瓦特性好的Fe-B和Fe-B-Si非晶都与高的低自旋Fe百分数、高的

P

（

H

i

）分布有关。

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168616&type=

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168616&type=small

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168616&type=middle

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168621&type=

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168621&type=small

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168621&type=middle

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168622&type=

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168622&type=small

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168622&type=middle

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168623&type=

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168623&type=small

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168623&type=middle

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168624&type=

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168624&type=small

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168624&type=middle

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168625&type=

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168625&type=small

http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=34168625&type=middle