Effect of magnetocrystalline anisotropy on magnetocaloric properties of an <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">AlFe</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">B</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math> compound

It is well known that the temperature dependence of effective magnetocrystalline anisotropy energy obeys $l(l+1)/2$ power law magnetization in Callen-Callen theory. Therefore, according to theory, assumed be zero at critical where approximately zero. This study estimates by integrating versus magnetic field ($M\ensuremath{-}H$) curves, and found still finite even above Curie uniaxial anisotropy, whereas this does not appear cubic case. The origin fast reduction field, which required saturate along hard axis, case anisotropy. anisotropic susceptibility, are key factors could established In addition, effect on magnetocaloric properties, as difference between entropy change curves ${\mathrm{AlFe}}_{2}{\mathrm{B}}_{2}$ appears temperature, good agreement with a previous experimental study. proof slightly temperature.