Metals 2013, 3(1), 69-76; doi:10.3390/met3010069
Article

Exchange Bias and Inverse Magnetocaloric Effect in Co and Mn Co-Doped Ni2MnGa Shape Memory Alloy

School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
* Author to whom correspondence should be addressed.
Received: 13 December 2012; in revised form: 8 January 2013 / Accepted: 17 January 2013 / Published: 25 January 2013
(This article belongs to the Special Issue Shape Memory Alloys)
PDF Full-text Download PDF Full-Text [323 KB, Updated Version, uploaded 25 January 2013 15:55 CET]
The original version is still available [324 KB, uploaded 25 January 2013 08:50 CET]
Abstract: Exchange bias effect observed in the Ni1.68Co0.32Mn1.20Ga0.80 alloy confirms the coexistence of antiferromagnetic and ferromagnetic phases in the martensite phase. A large inverse magnetocaloric effect has been observed within the martensitic transformation temperature range, which is originated from modified magnetic order through magnetic-field-induced phase transformation from partially antiferromagnetic martensite to ferromagnetic austenite. The magnetic entropy change is 16.2 J kg−1 K−1 at 232 K under ΔH = 60 kOe, with the net refrigerant capacity of 68 J kg−1. These properties indicate Co and Mn co-doped Ni2MnGa alloy is a multifunctional material potentially suitable for magnetic refrigeration and spintronics applications.
Keywords: shape memory alloy; exchange bias; inverse magnetocaloric effect; Ni-Mn-Ga; martensitic transformation

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Wang, B.; Liu, Y. Exchange Bias and Inverse Magnetocaloric Effect in Co and Mn Co-Doped Ni2MnGa Shape Memory Alloy. Metals 2013, 3, 69-76.

AMA Style

Wang B, Liu Y. Exchange Bias and Inverse Magnetocaloric Effect in Co and Mn Co-Doped Ni2MnGa Shape Memory Alloy. Metals. 2013; 3(1):69-76.

Chicago/Turabian Style

Wang, Baomin; Liu, Yong. 2013. "Exchange Bias and Inverse Magnetocaloric Effect in Co and Mn Co-Doped Ni2MnGa Shape Memory Alloy." Metals 3, no. 1: 69-76.

Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert