Volume : VII, Issue : VII, July - 2017

MAGNETO–MECHANICAL PROPERTIES OF IRON – RARE EARTH QUATERNARY RFe2 TYPE POLYCRYSTALINE ALLOYS

Dr. Jitendra Pendharkar

Abstract :

 Magnetostriction is Magneto–Mechanical phenomenon observed in ferromagnetic materials at temperatures below Curie temperature. There is change in the length Δ l that is the strain produced due to applied field is measured in micro strains. The variation in strain with applied magnetic field is similar to magnetization of sample, it increases with applied field and gets saturated. Magnetostriction of Terfenol–D is observed to be the maximum and for a polycrystalline sample it is around 1500 micro strain at room temperature. The coercivity is found to be very low and hence showed low losses. In this research paper the Magnetostriction Properties of Terfenol like Samples are discussed. Newly formed alloys of four metals showed Giant Magnetostriction at room temperature with very low coercivity but high Magnetization. The alloys made from Terbium, Gadolinium and Dysprosium with Iron as a main constituent (Tb0.3 Rx R’’1–x Fe2) [R– Rare Earth Metals] showed Giant Magnetostriction with Coercivity one fourth to that of Terfenol–D. 

Keywords :

Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Dr. Jitendra Pendharkar, MAGNETO–MECHANICAL PROPERTIES OF IRON – RARE EARTH QUATERNARY RFe2 TYPE POLYCRYSTALINE ALLOYS, INDIAN JOURNAL OF APPLIED RESEARCH : Volume‾7 | Issue‾7 | July‾2017


Number of Downloads : 304


References :