Abnormal magnetic behaviors and large magnetocaloric effect in MnPS3 nanoparticles

Authors

R Zeng, University of WollongongFollow
S Q. Wang, Hubei University
G D. Du, University Of WollongongFollow
Jianli Wang, University of WollongongFollow
J C. Debnath, University Of Wollongong
Precious Shamba, University of WollongongFollow
Z Y. Fang, University of WollongongFollow
S. X. Dou, University of WollongongFollow

RIS ID

59110

Publication Details

Zeng, R., Wang, S. Q., Du, G. D., Wang, J. L., Debnath, J. C., Shamba, P., Fang, Z. Y. & Dou, S. X. (2012). Abnormal magnetic behaviors and large magnetocaloric effect in MnPS3 nanoparticles. Journal of Applied Physics, 111 (7), 07E144-1-07E144-3.

Abstract

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 (χ) and heat capacity measurements showed the absence of long range magnetic ordering, at least down to 2 K. However, the χ 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 (−ΔS_m) of 6.8 and 12.8 J/kg K and an adiabatic temperature change (ΔT_ad) of 3.8 K and 8 K at 2.85 K for magnetic field changes of 3 T and 9 T, respectively.

Grant Number

ARC/DP0879070

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0879070