Magnetic Properties of a HoFe5Al7 Single Crystal

Authors :: Gorbunov, Denis I.
Andreev, Alexandr V.
Source :: Diffusion and Defect Data Part B: Solid State Phenomena; November 2012, Vol. 194 Issue: 1 p54-57, 4p
Publication Year :: 2012
Abstract: A single crystal of HoFe<subscript>5</subscript>Al<subscript>7</subscript> (tetragonal ThMn<subscript>12</subscript> structure) has been studied. HoFe<subscript>5</subscript>Al<subscript>7</subscript> orders ferrimagnetically at T<subscript>C</subscript> = 227 K and has a compensation of the Ho and Fe sublattices at T<subscript>comp</subscript> = 65 K. The compound exhibits high easy-plane anisotropy. Strong anisotropy is also present within the basal plane, with the [110] axis being the easy magnetization direction. A high coercivity with H<subscript>c</subscript> values attaining 1.6 T is found at 2 K. In the temperature range 40-80 K, HoFe<subscript>5</subscript>Al<subscript>7</subscript> displays a field-induced magnetic transition along the easy [110] direction. Temperature dependence of the critical field H<subscript>cr</subscript> of the transition is very strong, H<subscript>cr</subscript> exceeds 14 T below 40 K.