Title :
Nd–Fe–B Thick-Film Magnets Prepared by High Laser Energy Density
Author :
Nakano, M. ; Fujiyama, K. ; Yanai, T. ; Itakura, M. ; Fukunaga, H.
Author_Institution :
Grad. Sch. of Eng., Nagasaki Univ., Nagasaki, Japan
Abstract :
An observation of microstructure revealed that a laser-irradiated Nd-Fe-B target under the laser energy density above 10 J/cm2 enabled us to prepare isotropic nano-composite thick-film magnets with good magnetic properties due to a dispersed α-Fe + Nd-Fe-B structure. The formation of the structure is attributed to the etching process of a target during a deposition. Moreover, the control of composition in the nano-composite film enhanced the (BH)max value up to ~130 kJ/m3.
Keywords :
etching; iron compounds; laser beam effects; magnetic thin films; nanocomposites; nanofabrication; neodymium compounds; thin films; Nd-Fe-B thick-film magnets; NdFeB; etching process; isotropic nanocomposite thick-film magnets; laser energy density; laser-irradiated Nd-Fe-B target; magnetic properties; microstructure; structure formation; Amorphous magnetic materials; Light emitting diodes; Magnetic anisotropy; Magnetic films; Magnetic properties; Microstructure; Droplet; Nd-Fe-B; Nd???Fe???B; PLD (Pulsed Laser Deposition); droplet; laser energy density; laser energy density (LED); pulsed laser deposition (PLD);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2464089
