Effect of starting composition and annealing temperatureon irreversibility field and critical current density in MgxB2
文献类型：期刊论文
| 作者 | Xu GJ ; R. Pinholt ; J. Bilde-Sørensen ; J.-C. Grivel ; A.B. Abrahamsen ; N.H. Andersen |
| 刊名 | Physica C
 |
| 出版日期 | 2006 |
| 期号 | 434页码:67-70 |
| 关键词 | MgxB2 Irreversibility field Critical current density |
| 合作状况 | 国际 |
| 中文摘要 | Bulk samples of MgxB2 with starting composition of 0.5≤x≤1.3 were prepared using a solid-state reaction route. Their structure and critical current density (Jc) were investigated. The experimental results show that the starting composition MgxB2, as well as the sintering temperature, has a significant influence on Jc and Hirr. The lattice parameter a increases with x and c shows a maximum value around x = 0.9. All the samples possess a Jc value about 106 A/cm2 in self-field for x > 0.5. However, at high magnetic field the Mg-deficient samples exhibit higher Jc values. The highest irreversibility field of Hirr = 5.2 T at 20 K was reached for x = 0.8 with sintering temperature of 800 ℃, which is 0.8 T higher than that of the stoichiometric MgB2 sample. It is suggested that the formation of MgB4 nanoparticles is responsible for the increase of Hirr and Jc. |
| 收录类别 | SCI |
| 语种 | 中文 |
| 公开日期 | 2009-12-14 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/37]  |
| 专题 | 宁波材料技术与工程研究所_宁波所知识产出 |
| 推荐引用方式 GB/T 7714 | Xu GJ,R. Pinholt,J. Bilde-Sørensen,et al. Effect of starting composition and annealing temperatureon irreversibility field and critical current density in MgxB2[J]. Physica C,2006(434):67-70. |
| APA | Xu GJ,R. Pinholt,J. Bilde-Sørensen,J.-C. Grivel,A.B. Abrahamsen,&N.H. Andersen.(2006).Effect of starting composition and annealing temperatureon irreversibility field and critical current density in MgxB2.Physica C(434),67-70. |
| MLA | Xu GJ,et al."Effect of starting composition and annealing temperatureon irreversibility field and critical current density in MgxB2".Physica C .434(2006):67-70. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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