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

Volume

51

Issue

11

fYear

2015

Firstpage

1

Lastpage

4

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);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2464089

Filename

7175041