Weak ferromagnetism and spin-glass state with nanosized nickel carbide
文献类型：期刊论文
| 作者 | Chen, Chinping1; He, Lin1; Leng, Yonghua2; Li, Xingguo2,3 |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2009-06-15 |
| 卷号 | 105期号:12 |
| ISSN号 | 0021-8979 |
| DOI | 10.1063/1.3155997 |
| 英文摘要 | Magnetic properties of Ni(3)C nanoparticles, about 40 nm in diameter, have been investigated. The sample exhibits weak ferromagnetic (FM), spin-glass (SG), and paramagnetic (PM) properties by alternating current susceptibility and direct current magnetization measurements. The freezing temperature of the SG phase at zero applied field is determined as T(F)(0) similar to 11.0 K. At T > T(F)(0), a very weak ferromagnetism has been observed over a strong PM background. The Curie temperature T(C) is shown to exceed 300 K, and the ferromagnetism at 300 K is determined as about 0.02 emu/g similar to 6.7 x 10(-4) mu(B) per Ni(3)C formula unit. An anomalous dip appears in the temperature dependent coercivity H(C)(T) near the freezing temperature T(F)(0). It reflects the distortedly reduced coercivity in the M(H) hysteresis loop measured at T similar to T(F)(0) with the applied sweeping field approaching H = 0. This is attributable to the interaction between the SG and the weak FM phases. The possible origin of the magnetic moments that account for the observed FM, SG, and PM properties is discussed. (c) 2009 American Institute of Physics. [DOI: 10.1063/1.3155997] |
| 语种 | 英语 |
| WOS记录号 | WOS:000267599600104 |
| 出版者 | AMER INST PHYSICS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/67451]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen, Chinping |
| 作者单位 | 1.Peking Univ, Dept Phys, Beijing 100871, Peoples R China 2.Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, BNLMS, Beijing 100871, Peoples R China 3.Peking Univ, Coll Engn, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Chinping,He, Lin,Leng, Yonghua,et al. Weak ferromagnetism and spin-glass state with nanosized nickel carbide[J]. JOURNAL OF APPLIED PHYSICS,2009,105(12). |
| APA | Chen, Chinping,He, Lin,Leng, Yonghua,&Li, Xingguo.(2009).Weak ferromagnetism and spin-glass state with nanosized nickel carbide.JOURNAL OF APPLIED PHYSICS,105(12). |
| MLA | Chen, Chinping,et al."Weak ferromagnetism and spin-glass state with nanosized nickel carbide".JOURNAL OF APPLIED PHYSICS 105.12(2009). |
入库方式： OAI收割
来源：化学研究所
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