| 引用本文: | 程香爱,曾兴林,曹烈兆,等.熔融织构（MTG）的YBa2Cu3O7-δ块材的交流磁化率研究.[J].国防科技大学学报,1993,15(2):57-60.[点击复制] |
| Cheng Xiangai,Zen Xinglin,Cao Liezhao,et al.AC Susceptibility on YBa2Cu3O7-δ Bulk Material by Melt-textured Growth Method[J].Journal of National University of Defense Technology,1993,15(2):57-60[点击复制] |
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| 熔融织构（MTG）的YBa2Cu3O7-δ块材的交流磁化率研究 |
| 程香爱1, 曾兴林2, 曹烈兆2, 张其瑞3, 王顺喜4, 王玉贵4 |
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(1.国防科技大学物理系;2.中国科技大学物理系;3.浙江大学物理系;4.中国科学院等离子体研究所)
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| 摘要: |
| 本文通过控制温度梯度和降温速率等烧结工艺制备了熔融织构的YBa2Cu3O7-δ块材，经结构分析和交流磁化率测量，发现样品晶粒择优取向，样品开始出现抗磁信号的温度为 92K，交流磁化率虚部只存在一个反映晶粒内部损耗的小尖峰。施加直流场 0-600高斯，小尖峰向低温移动，峰的半宽度略有展宽，峰的高度增强。用磁滞损耗解释了上述结果。 |
| 关键词: 熔融织构，交流磁化率，晶粒，磁滞损耗 |
| DOI： |
| 投稿日期：1991-04-10 |
| 基金项目: |
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| AC Susceptibility on YBa2Cu3O7-δ Bulk Material by Melt-textured Growth Method |
| Cheng Xiangai1, Zen Xinglin2, Cao Liezhao2, Zhang Qirui3, Wang Shunxi4, Wang Yugui4 |
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(1.Department of Physics，Nationa1 University of Defense Techno1ogy;2.Department of Physics，University of Science & Techno1ogy of China;3.Department of Physics，Zhejiang University;4.Institute of P1asma，Academia Sinica)
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| Abstract: |
| By contro1ing the temperature gradient and the slow cooling rate，we have prepared YBa2Cu3O7-δ bu1k materia1 by melt-texted growth (MTG) method. Structure ana1ysis and ac. susceptibility measurement show that the crysta1 is preferentially aligned and the temperature is about 92K while the onset demagnetic signal appears. only one single peak of x"appears which shows intragrain loss. The small peak moves to low temperature，the half-width of the peak widen a 1ittle，and the peak becomes stronger when dc.externa1 fie1d varies from 0 to 600 guass，We exp1ained the experimental resu1ts by the magnetic hysteresis loss. |
| Keywords: melt-texted growth,ac.susceptibility,grain,magnetic hysteresis loss |
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