采用PPMS物性测量系统测定了纯Cu在不同磁场强度(0、3、6、9 T)作用下,2~300 K温度区间内的比热值以及纯Fe在0~9 T磁场强度范围内,5~300 K温度区间的等温磁化曲线.根据实验与计算结果可以看出,在强度为0~9 T的外加磁场作用下,纯Cu、纯Fe在所研究温度范围内的比热值基本无变化;在研究其固溶体或化合物在外加磁场作用下的自由能时,应当重在考虑磁场强度对其混合自由能的作用.
参考文献
[1] | 张维平;袁聪;刘硕.强磁场对材料组织性能影响的研究进展[J].中国材料科技与设备,2006(01):1-4. |
[2] | Choi J-K.;Ohtsuka H. .EFFECTS OF A STRONG MAGNETIC FIELD ON THE PHASE STABILITY OF PLAIN CARBON STEELS[J].Scripta materialia,2000(3):221-226. |
[3] | G. M. Ludtka;R. A. Jaramillo;R. A. Kisner;D. M. Nicholson;J. B. Wilgen;G. Mackiewicz-Ludtka;P. N. Kalu .In situ evidence of enhanced transformation kinetics in a medium carbon steel due to a high magnetic field[J].Scripta materialia,2004(2):171-174. |
[4] | Zhang Y D;Esling C;Lecomte J S et al.Grain boundary charateristics and texture formation in a medium carbon steel during its austenitic decomposition in a high magnetic field[J].ACTA MATERIALIA,2005,53:5213-5221. |
[5] | T. Fukuda;T. Kakeshita;K. Kindo .Effect of high magnetic field and uniaxial stress at cryogenic temperatures on phase stability of some austenitic stainless steels[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(0):212-217. |
[6] | Y. Zhang;C. He;X. Zhao .New microstructural features occurring during transformation from austenite to ferrite under the kinetic influence of magnetic field in a medium carbon steel[J].Journal of Magnetism and Magnetic Materials,2004(0):287-293. |
[7] | 张焱,高政祥,高进,曹立志.物理性质测量系统(PPMS)的原理及其应用[J].现代仪器,2004(05):44-47. |
[8] | 刘学东,李新华,卢佃清,李国栋.通过磁化曲线计算磁熵值[J].物理实验,2005(04):9-11. |
[9] | Hu F X;Shen B G;Sun J R et al.Magnetic entropy change in La(Fe0.98Co0.02)11.7Al1.3[J].Journal of Physics:Condensed Matter,2002,12:691-696. |
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