The results of 57Fe Mössbauer investigations carried out on the hydrogenated compounds of Dy0.73Tb0.27Fe1.5Co0.5 are presented. A change in the temperature range of the [1 0 0]-[1 1 1] spin reorientation transition from 200-290 K in Dy0.73Tb0.27Fe1.5Co0.5 to 100-150 K in Dy0.73Tb0.27Fe1.5Co0.5H 0.5 is attributed to changes in the crystalline electric field (CEF) effects resulting from the increase in rhombohedral distortions due to the orientational ordering of hydrogen atoms in the lattice. The variations in hyperfine field and isomer shift are also discussed. © 1997 Elsevier Science Ltd.

G. Markandeyulu

Department Of Physics

S. Kishore

K. V.S. Rama Rao

T.P.Das

Crystal lattices

Crystal orientation

Crystalline materials

Electric field effects

Hydrogenation

Mossbauer spectroscopy

Thermal effects

RHOMBOHEDRAL DISTORTIONS

SPIN ORIENTATION TRANSITIONS

DYSPROSIUM ALLOYS

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IIT Madras

57Fe Mössbauer investigations on the hydrogenated compounds of Dy0.73Tb0.27Fe1.5Co0.5

Solid State Communications

The results of low temperature magnetization measurements carried out on the Dy0.73Tb0.27Fe2-xCox system and their hydrogenated compounds are presented. Low temperature (12 K) magnetization data reveals a large increase in anisotropy in the hydrogenated compounds, attributed to a modification in crystalline electric field effects as a result of the orientational ordering of hydrogen atoms in the lattice. The discrete step-wise increase in magnetization upto a field of 2 kOe in the parent alloys and the hydrogenated compounds is attributed to spin-flip metamagnetism. © 1998 Elsevier Science Ltd. All rights reserved.

Spin-flip metamagnetism in the laves phase compounds Dy0.73Tb0.27Fe2-xCoxHn

57FE mössbauer investigations on the hydrogenated compounds of Dy0.73Tb0.27Fe1.5Co0.5

Journal	Data powered by TypesetSolid State Communications
Publisher	Data powered by TypesetElsevier Ltd
ISSN	00381098
Open Access	No