Title :
Reentrant behavior in the temperature dependence of metamagnetic transitions in single crystal Nd6Fe13-xAl1+x
Author :
McCallum, R.W. ; Fisher, I.R. ; Anderson, N.E. ; Canfield, P.C. ; Kramer, M.J. ; Dennis, K.W.
Author_Institution :
Ames Lab., Iowa State Univ., Ames, IA, USA
fDate :
7/1/2001 12:00:00 AM
Abstract :
Nd6Fe13-xAl1+x, (δ) is a complex antiferromagnet with a Neel temperature that ranges from ~250 K to ~350 K. Studies of polycrystalline samples of the Nd compound have shown that the material undergoes a series of metamagnetic transitions as a function of magnetic field. In the present study, single crystals of δ have been grown and characterized. Low temperature magnetization studies demonstrate that there are a number of competing magnetic interactions in the material, which have different temperature dependencies. As a result, for a narrow range of fields, the δ crystals exhibit unique reentrant magnetization versus temperature behavior
Keywords :
Neel temperature; aluminium alloys; antiferromagnetic materials; iron alloys; magnetisation; metamagnetism; neodymium alloys; Nd6(FeAl)13; Neel temperature; antiferromagnet; magnetization; metamagnetic transitions; polycrystalline samples; reentrant behavior; single crystal; temperature dependence; Antiferromagnetic materials; Crystalline materials; Crystals; Iron; Magnetic fields; Magnetic materials; Magnetization; Neodymium compounds; Temperature dependence; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
