| 非晶态(Fe1-xCox)77.5Nd4B18.5合金的电阻率的压力系数和压力弛豫研究 |
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| 引用本文： | 苏昉,谢斌,沈保根.非晶态(Fe1-xCox)77.5Nd4B18.5合金的电阻率的压力系数和压力弛豫研究[J].物理学报,1994,43(8):1301-1310. |
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| 作者姓名： | 苏昉 谢斌 沈保根 |
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| 作者单位： | (1)中国科学技术大学基础物理中心; (2)中国科学技术大学基础物理中心,中国科学技术大学结构分析开放研究实验室 |
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| 基金项目： | 国家自然科学基金和国家科委基础处资助的课题. |
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| 摘 要： | 在０．０００１－２．４ＧＰａ流体静压力范围详细研究了非晶(Fe1-xCox)77.5Nd4B18.5（０≤ｘ≤１．０）合金的电阻率与压力的关系，得到该非晶合金电阻率的压力系数随组分ｘ变化的规律。结果表明：用少量的钴（ｘ＝０．２）替代铁，不会影响其硬磁性和热稳定性，同时却可减小电阻率的压力系数，从而增强电磁性能在压力下的稳定性。此外还观测到在０．５１ＧＰａ保压３－２４h的结构弛豫，进一步求出该非晶台金电阻率的压力弛豫时间对组分ｘ的依赖关系。
关键词：
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| 关 键 词： | 金属玻璃 电阻率 压力系数 弛豫 |
| 收稿时间： | 1993-08-26 |
PRESSURE-COEFFICIENT OF RESISTIVITY AND RELAXATION UNDER PRESSURE IN AMORPHOUS ALLOYS (Fe1-xCox)77.5Nd4B18.5 |
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| SU FANG,XIE BIN and SHEN BAO-GEN.PRESSURE-COEFFICIENT OF RESISTIVITY AND RELAXATION UNDER PRESSURE IN AMORPHOUS ALLOYS (Fe1-xCox)77.5Nd4B18.5[J].Acta Physica Sinica,1994,43(8):1301-1310. |
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| Authors: | SU FANG XIE BIN and SHEN BAO-GEN |
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| Abstract: | Pressure-resistivity relation of amorphous alloys (Fe1-xCox)77.5Nd4B18.5（０≤ｘ≤１．０） were investigated in detail in the hydrostatic pressure range from 0.0001 to 2.4 GPa. We obtained the variation rule of pressure coefficient of resistivity with content x in above amorphous alloys. Results show that substitution of a little Co(x=0.2) for Fe can not affect magnetic hardness and thermal stability, but enhance resistivity (about 28%)，and improve stability both of electrical and magnetic properties under high pressure. Moreover, structure relaxation were observed under 0.51GPa for 3-24 hours. Content x dependence of relaxation time of resistivity of the amorphous alloys under high pressure was studied. |
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