We investigate the low-temperature magnetic properties of intermetallic compounds Tb1-xPrx（Fe0.4Co0.6）1.88C0.05（x = 0, 0.8, and 1） by detailed magnetization measurements. Obvious temperature- and field-induced irr...We investigate the low-temperature magnetic properties of intermetallic compounds Tb1-xPrx（Fe0.4Co0.6）1.88C0.05（x = 0, 0.8, and 1） by detailed magnetization measurements. Obvious temperature- and field-induced irreversibilities suggest the coexistence of multiple magnetic phases. Sharp magnetization jumps across the antiferromagnetic to ferromagnetic transition are observed only in the Pr-containing samples, indicating that the behavior of the avalanche-like growth of ferromagnetic clusters is mainly related to the light lanthanide Pr ions. In addition, the time relaxation, field sweep rate, and cooling field dependence of magnetization jumps in the sample with x = 1 are consistent with those in the martensitic scenario.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.11104091)the Funds from Provincial Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guangxi Zhuang Autonomous Region,China(Grant No.1210908-05-K)
文摘We investigate the low-temperature magnetic properties of intermetallic compounds Tb1-xPrx（Fe0.4Co0.6）1.88C0.05（x = 0, 0.8, and 1） by detailed magnetization measurements. Obvious temperature- and field-induced irreversibilities suggest the coexistence of multiple magnetic phases. Sharp magnetization jumps across the antiferromagnetic to ferromagnetic transition are observed only in the Pr-containing samples, indicating that the behavior of the avalanche-like growth of ferromagnetic clusters is mainly related to the light lanthanide Pr ions. In addition, the time relaxation, field sweep rate, and cooling field dependence of magnetization jumps in the sample with x = 1 are consistent with those in the martensitic scenario.
