Study on magnetic anisotropy and magnetocaloric effect of Co50V34Ga16 alloy

Abstract

Abstract This article reported the magnetocaloric properties and magnetic anisotropy of Co50V34Ga16 alloy with directional solidification direction. The Curie temperatures of this alloy in the three directions are 214 K, 214 K, and 216 K for a, b, and c, respectively. The maximum values of inverse magnetic entropy change below 205K under a magnetic field of 5 T are 1.0306 J kg−1·K−1, 1.155 J kg−1·K−1, and 1.1834 J kg−1·K−1, respectively. For the temperature higher than 205K, the maximum values of magnetic entropy change of the three directions under a magnetic field of 5 T are −1.2232 J kg−1·K−1, −1.2267 J kg−1·K−1, and −1.225 J kg−1·K−1, respectively. Moreover, the Landau theory is used to calculate the magnetic entropy change consistent with the experimental results of Maxwell equation.