Abstract
Experimental studies of the structural, magnetic and magnetocaloric properties of polycrystalline alloys Tb5Si4, Dy5Si4, Ho5Si4 in external magnetic fields up to 3 T have been carried out, and changes in the magnetic part of the entropy in higher fields of 20 T generated by superconducting magnetic systems have been calculated. Magnetic measurements have shown that these compounds have a low coercive force and reach saturation in small fields. It has been established that the magnetocaloric effect in the studied compounds is observed in a wide temperature range, and for intermetallides Tb5Si4, Dy5Si4, Ho5Si4 has several areas of existence comparable in magnitude of the effect. The presence of several intervals of the existence of the magnetocaloric effect is caused by a series of magnetic phase transitions in these ferrimagnetic compounds.
Published Version
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