Abnormal magnetic behaviors and large magnetocaloric effect in MnPS3 nanoparticles

作者：Zeng, R.^*; Wang, S. Q.; Du, G. D.; Wang, J. L.; Debnath, J. C.; Shamba, P.; Fang, Z. Y.; Dou, S. X.

来源：Journal of Applied Physics, 2012, 111(7): 07E144.

DOI：10.1063/1.3679409

• LIQUID
• MN

A nanostructured honeycomb lattice consisting of MnPS3 nanoparticles synthesized via the ion-exchange technique was found to have restacked molecular layers stabilized by H2O insertion between the layers. Susceptibility (chi) and heat capacity measurements showed the absence of long range magnetic ordering, at least down to 2 K. However, the chi data showed that the system possesses a high effective Curie temperature, suggesting that the system is in a high spin lattice disordered state. Evaluation of the magnetocaloric effect indicates that the system has a large reversible magnetic-entropy change (-Delta S-m) of 6.8 and 12.8 J/kg K and an adiabatic temperature change (Delta T-ad) of 3.8 K and 8 K at 2.85 K for magnetic field changes of 3 T and 9 T, respectively.

• 出版日期2012-4-1
• 单位湖北大学