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|Title: ||Magnetization and specific heat studies of RNi4Ga (R=Sm, Gd and Tb)|
|Authors: ||JOSHI, DA|
|Issue Date: ||2007|
|Publisher: ||ELSEVIER SCIENCE BV|
|Citation: ||JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 313(1), 151-156|
|Abstract: ||In order to elucidate the anomalous magnetic properties in the ferromagnetically ordered state of SmNi4Ga GdNi4Ga and TbNi4Ga, we have carried out a detailed study with magnetization and specific heat (SH) measurements. GdNi4Ga shows the possibility of a filled 3d band and a helical spin arrangement below the ordering temperature. TbNi4Ga shows a dominant crystal field effect resulting in a deviation of T-C from the de-Gennes scaling and possible Schottky anomalies in the SH. SmNi4Ga shows a large coercivity at low temperatures. A rough estimate of the domain wall thickness in SmNi4Ga gives a value of 8 angstrom. (C) 2007|
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