Volume : V, Issue : IX, September - 2015

Magnetic and Magnetostrictive properties of Gadolinium–Terfenol–D Alloys

Jitendra Pendharkar, Manohar Nyayate

Abstract :

It was observed that RFe2 compounds exhibits large Magnetostriction effects (1,2) at room temperature, and Terfenol–D which is a composition of Tb0.3Dy0.7Fe1.97 exhibits maximum Magnetostriction of 1450 micro strain at room temperature in polycrystalline form. The change in the magnetic and magnetostrictive properties has been studied (5,6) by changing its composition. The Dysprosium is replaced by Gadolinium which is another rare earth element in lanthanide series. The relative percentage of Dysprosium is changed with Gadolinium. The change again gives good Magnetization at 3oK as well as low corecivity. The Iron is not changed with any other element as it was observed that the resultant compositions turns out to be Paramagnetic at temperature above 180 oK. the effect of increase in Gadolinium is observed in Terfenol–D sample. The Magnetostriction was found to be several hundreds of micro strains at room temperature in all the samples. The addition of less amount of Gadolinium showed more residual magnetization and negative Magnetostriction.

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Jitendra Pendharkar, Manohar Nyayate Magnetic and Magnetostrictive properties of Gadolinium-Terfenol-D Alloys Indian Journal of Applied Research, Vol.5, Issue : 9 September 2015

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