Abstract
A method to calculate the first anisotropy constant of a uniaxial anisotropy system from the initial susceptibility of magnetization hard direction have been studied. The formulas for single crystal and magnetically aligned powder based on rigid coupled magnetization model or two sublattice magnetization model have been derived and applied to determine the anisotropy constant of RE 2Fe 14B (RE=Ce, Pr, Gd, Tb, Dy) compounds. From the susceptibility of single crystals, the first anisotropy constants of a rare-earth sublattice of an RE 2Fe 14B-type compound have been calculated to be K 1Pr=5200 J/kg, K 1Tb=4500 J/kg and K 1Dy=1700 J/kg, and they are found to be 15–45 times stronger than the anisotropy of Fe-sublattice.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
