Influence of hot pressure on the magnetoresistance of CrO2
文献类型：期刊论文
| 作者 | Wang, Xianjie; Sui, Yu; Song, Xiudan; Zhu, Ruibin; Qian, Zhengnan; Su, Wenhui; Tang, Jinke |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2007-05-01 |
| 卷号 | 101期号:9页码:3 |
| ISSN号 | 0021-8979 |
| DOI | 10.1063/1.2714272 |
| 通讯作者 | Sui, Yu(suiyu@hit.edu.cn) |
| 英文摘要 | In this paper, we investigate the influence of high temperature and high pressure (hot pressure) on the magnetic and transport properties of polycrystalline CrO2 samples compacted under high pressure and high temperature of up to 5 GPa and 600 degrees C, respectively. The magnetic moment increases with compacting temperature, and a metal-semiconductor transition is observed in hot-pressed samples, different from the cold-pressed samples. These results indicate that the formation of Cr2O3 at the grain boundaries of CrO2 is suppressed by hot pressure. The magnitude of low field magnetoresistance of up to 1 T at 5 K is enhanced first with the increase of compacting temperature and then decreased under higher compacting temperature. This result can be well explained by the change of spin-dependent tunneling at the modulated grain boundaries of CrO2 due to the transformation from Cr2O3 to CrO2 under hot pressure. (c) 2007 American Institute of Physics. |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000246567900355 |
| 出版者 | AMER INST PHYSICS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/89224]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Sui, Yu |
| 作者单位 | 1.Harbin Inst Technol, Dept Phys, CCMST, Harbin 150001, Peoples R China 2.Univ New Orleans, Dept Phys, New Orleans, LA 70148 USA 3.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xianjie,Sui, Yu,Song, Xiudan,et al. Influence of hot pressure on the magnetoresistance of CrO2[J]. JOURNAL OF APPLIED PHYSICS,2007,101(9):3. |
| APA | Wang, Xianjie.,Sui, Yu.,Song, Xiudan.,Zhu, Ruibin.,Qian, Zhengnan.,...&Tang, Jinke.(2007).Influence of hot pressure on the magnetoresistance of CrO2.JOURNAL OF APPLIED PHYSICS,101(9),3. |
| MLA | Wang, Xianjie,et al."Influence of hot pressure on the magnetoresistance of CrO2".JOURNAL OF APPLIED PHYSICS 101.9(2007):3. |
入库方式： OAI收割
来源：金属研究所
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