Visual study of domain structure in RbNi1−<i>x</i>Co<i>x</i>F3 hexagonal ferrimagnets
A. I. BelyaevaPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovS. V. PetrovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovYu. N. Stel’makhovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovV. P. YUR'EVPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov
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We report a visual study of the domain structure of thin crystal platelets of the hexagonal ferrimagnetic system RbNi1−xCoxF3 (x = 0.19 and x = 0.23), which has an “easy axis” type of anisotropy, in the temperature range 4.2−140 K in an external magnetic field H║C6. It is shown that depending on the growth conditions different types of open domain structures may arise and exist stably, with the surface domains of opposite magnetization typical of thick (h &gt; hc) magnetically uniaxial platelets. The parameters of the structures studied are in accord with the results of calculations based on known theoretical models.
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