D. J. Branagan

Order-disorder effects in nitrided Sm-Fe permanent magnets (2000)

Meacham, B.E., Shield, Jeffrey E., Branagan, D.J.

Rapidly solidified Sm11Fe89 was observed to form partially ordered Sm2Fe17. The ordering increased systematically with annealing temperature, reaching an order parameter of 0.8 after annealing at 950...

The effect of grain size on magnetic properties in Sm2Fe17Nx (1998)

Shield, Jeffrey E., Branagan, D.J., Li, C.P., McCallum, R.W.

The microstructures of melt spun Sm11Fe89 and (Sm11Fe89)94Ti3C3 have been investigated under different solidification conditions. The magnetic properties of the nitrided materials have been related...

A generalized solidification model and microstructural verification for the Nd-Fe-B-Ti-C system processed by rapid solidification (1997)

Kramer, M.J., Li, C.P., Dennis, K.W., McCallum, R.W., Sellers, C.H., Branagan, D.J., ...

For the Nd2Fe14B (2-14-1) compound, the optimal grain size should be smaller than the size of the single domain size of 150 nm. Transition metal carbides (TMC) also reduce the quench rate necessary...