First-order magnetization process and spin phase diagram of Nd sub 2 Fe sub 14 minus x Ga sub x B and Nd sub 2 Fe sub 11. 5 minus x Co sub 2. 5 Ga sub x B

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.7162· OSTI ID:6948295

Xie, J Q; Wu, C H; Chuang, Y C ^[1]; Yang, F M ^[2]

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1. Institute of Metal Research, Academia Sinica, Shenyang, People's Republic of China (CN)
2. Institute of Physics, Academia Sinica, Beijing, People's Republic of China (CN)

The first-order-magnetization-process (FOMP) transition field, Curie temperature, and spin-reorientation temperature of Nd{sub 2}Fe{sub 14{minus}{ital x}}Ga{sub {ital x}}B and Nd{sub 2}Fe{sub 11.5{minus}{ital x}}Co{sub 2.5}Ga{sub {ital x}}B with {ital x}{le}1.5 have been determined. Ga increases the Curie temperature of Nd{sub 2}Fe{sub 14{minus}{ital x}}Ga{sub {ital x}}B but decreases that of Nd{sub 2}Fe{sub 11.5{minus}{ital x}}Co{sub 2.5}Ga{sub {ital x}}B compounds. This difference in the behavior of Ga stems from the preferential occupancy of Fe sites being different in the above two compound series. The spin-reorientation temperature of these compounds decreased with increasing Ga content. The FOMP transition field changed in an opposite manner. At a fixed temperature (180 K), it increased with increase in Ga content. The lower the temperature, the more pronounced the increase of the FOMP transition field {ital B}{sub tr}. Based on these findings, spin phase diagrams were constructed.

• OSTI ID: 6948295
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:10; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ANISOTROPY
BORIDES
BORON COMPOUNDS
COBALT BORIDES
COBALT COMPOUNDS
CURIE POINT
GALLIUM COMPOUNDS
IRON BORIDES
IRON COMPOUNDS
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
MEDIUM TEMPERATURE
NEODYMIUM BORIDES
NEODYMIUM COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
STOICHIOMETRY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE