Coercivity study of hybrid magnet consisting of R-lean and R-rich phases

Author

Kwon, H.W. ; Hadjipanayis, G.C.

Author_Institution

Sch. of Mater. Sci. & Eng., Pukyong Nat. Univ., South Korea

fYear

2005

fDate

4-8 April 2005

Firstpage

949

Lastpage

950

Abstract

Nd_13.5Fe₈₀Ga_0.5B₆ R-rich alloy and two types of Nd_xFe_93-xNb₁B₆ R-lean alloys are used to prepare compacted and die-upset magnets. The microstructure of the samples are examined using a high resolution scanning electron microscope. The cubic shape specimens are magnetized in a superconducting quantum interference device (SQUID) and the room temperature demagnetization curves are measured using a SQUID and a vibrating sample magnetometer (VSM). All measured demagnetization curves are corrected for the self-demagnetizing field using a demagnetizing factor.

Keywords

SQUID magnetometers; boron alloys; coercive force; compaction; crystal microstructure; demagnetisation; ferromagnetic materials; gallium alloys; iron alloys; neodymium alloys; niobium; permanent magnets; scanning electron microscopy; 293 to 298 K; Nd_13.5Fe₈₀Ga_0.5B₆; Nd_xFe_93-xNb₁B₆; R-lean phase; R-rich phase; SQUID; VSM; coercivity; compacted magnet; demagnetization curve; demagnetizing factor; die-upset magnet; high resolution scanning electron microscope; hybrid magnet; microstructure; permanent magnets; room temperature; self-demagnetizing field; superconducting quantum interference device; vibrating sample magnetometer; Coercive force; Demagnetization; Gallium alloys; Iron alloys; Magnetic field measurement; Neodymium; Niobium alloys; SQUIDs; Shape measurement; Superconducting magnets;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Print_ISBN

0-7803-9009-1

Type

conf

DOI

10.1109/INTMAG.2005.1463903

Filename

1463903