Large magnetic entropy change near room temperature in antiperovskite SnCMn3

B. S. Wang; P. Tong; Y. P. Sun; X. Luo; X. B. Zhu; G. Li; X. D. Zhu; S. B. Zhang; Z. R. Yang; W. H. Song; J. M. Dai

doi:10.1209/0295-5075/85/47004

All issues

Volume 85 / No 4 (February 2009)

EPL, 85 4 (2009) 47004

Abstract

Issue		EPL Volume 85, Number 4, February 2009


Article Number		47004
Number of page(s)		5
Section		Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
DOI		https://doi.org/10.1209/0295-5075/85/47004
Published online		03 March 2009

EPL, 85 (2009) 47004

Large magnetic entropy change near room temperature in antiperovskite SnCMn₃

B. S. Wang¹, P. Tong¹^,2, Y. P. Sun¹, X. Luo¹, X. B. Zhu¹, G. Li¹, X. D. Zhu¹, S. B. Zhang¹, Z. R. Yang¹, W. H. Song¹ and J. M. Dai¹

¹ Key Laboratory of Materials Physics, Institute of Solid State Physics, and High Magnetic Field Laboratory, Chinese Academy of Sciences - Hefei 230031, PRC
² Department of Physics, University of Virginia - Charlottesville, VA 22904, USA

Corresponding authors: tongpeng@issp.ac.cn ypsun@issp.ac.cn

Received: 14 November 2008
Accepted: 28 January 2009

Abstract

We report the observation of a large magnetocaloric effect near room temperature in the antiperovskite SnCMn₃. The maximal magnetic entropy change at the first-order ferrimagnetic-paramagnetic transition temperature ( $T_{{\rm C}}$ ~ 279 K) is about 80.69 mJ/cm³ K and 133 mJ/cm³ K under a magnetic field of 20 kOe and of 48 kOe, respectively. These values are close to those of typical magnetocaloric materials. The large magnetocaloric effect is associated with the sharp change of lattice, resistivity and magnetization in the vicinity of $T_{{\rm C}}$ . Through the measurements of the Seebeck coefficient and normal Hall effect, the title system is found to undergo a reconstruction of the electronic structure at $T_{{\rm C}}$ . Considering its low-cost and innocuous raw materials, Mn-based antiperovskite compounds are suggested to be appropriate for pursuing new materials with larger magnetocaloric effect.

PACS: 75.30.Sg – Magnetocaloric effect, magnetic cooling / 75.50.Gg – Ferrimagnetics / 75.30.Kz – Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)

© EPLA, 2009

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.