Step-like and first-order characters of Tb0.2Pr0.8(Fe0.4Co0.6)1 .93 with low interstitial carbon content

作者：Huang, J. W.; Xia, Z. C.^*; Cheng, G.; Shi, L. R.; Jin, Z.; Chen, B. R.; Shang, C.; Wei, M.

来源：Intermetallics, 2015, 63: 45-50.

DOI：10.1016/j.intermet.2015.03.018

• Functional alloys
• Magnetic properties
• Phase transformation
• Martensitic structure
• Interfaces

In this study we report detailed magnetic property of the 4f-3d pseudo-quaternary Tb0.2Pr0.8(Fe-0.4-Co-0.6)(1.88)C-0.05 compound by detailed magnetization measurements. Very sharp magnetization jumps across the antiferromagnetic-ferromagnetic transition are observed below 3.0 K, and the number of jump-like transitions increases with decreasing temperature. The time-dependent magnetic relaxation, field sweep rate and cooling field dependence of magnetization jumps resemble the martensitic scenario. The number and occurrence of magnetization jumps are mainly determined by the competitions between the thermal fluctuation energy, elastic energy and Zeeman energy, and the field-induced anti-ferromagnetic to ferromagnetic phase transition at low temperatures is of first-order in nature.

• 出版日期2015-8
• 单位华中科技大学; 桂林电子科技大学