Title :
Magnetic properties of extremely small Nd-Fe-B sintered magnet
Author :
Nakamura, H. ; Hirota, K. ; Minowa, T. ; Honshima, M.
Author_Institution :
Magnetic Mater. Res. Center, Shin-Etsu Chem. Co., Japan
Abstract :
Sintered magnets with various grain sizes and coercivities were prepared by the binary alloys method. Bulk magnets are cut into small pieces, some are etched by a nitric acid solution and heat treated and subjected to aging. Magnetic properties are measured by vibrating sample magnetometer. Grain size distributions are measured using optical images taken from the sintered magnets after lapping and etching by the Villela´s reagent.
Keywords :
ageing; boron alloys; coercive force; demagnetisation; etching; ferromagnetic materials; grain size; heat treatment; iron alloys; lapping (machining); neodymium alloys; permanent magnets; sintering; NdFeB; Villela reagent; binary alloys method; coercivity; etching; grain size; heat treatment; lapping; nitric acid solution; sintered magnet; vibrating sample magnetometer; Chemicals; Coercive force; Demagnetization; Etching; Grain size; Heat treatment; Magnetic properties; Pulsed laser deposition; Surface treatment; Tin;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463904
