Structure and uniaxial magnetocrystalline anisotropy of intermetallic compounds La{sub 2}Co{sub 17{minus}x}Ti{sub x}

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.119424· OSTI ID:542531

Liu, Q ^[1]; Liang, J ^[1]; Rao, G; Tang, W; Sun, J; Chen, X ^[1]; Shen, B ^[1]

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1. Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, Peoples Republic of (China)

The crystal structure and magnetic properties of intermetallic compounds La{sub 2}Co{sub 17{minus}x}Ti{sub x} (0.8{le}x{le}1.2) have been investigated by x-ray powder diffraction and magnetic measurement. The lattice parameters of La{sub 2}Co{sub 17{minus}x}Ti{sub x} with the rhombohedral Th{sub 2}Zn{sub 17}-type structure are a=8.518{endash}8.531{Angstrom}, c=12.344{endash}12.379{Angstrom}. Ti atoms show a strong preference for occupying 6c crystallographic positions. The La{sub 2}Co{sub 17{minus}x}Ti{sub x} compounds are ferromagnetic. The Curie temperature decreases from 972 to 872 K, and the saturation magnetic moment decreases from 23.2 to 21.3{mu}{sub B}/f.u. with x=0.8{endash}1.2. The La{sub 2}Co{sub 16}Ti compound exhibits favorable uniaxial anisotropy, and the easy magnetization direction is parallel to the c axis. The anisotropy field is 23 kOe at 1.5 K for this compound. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 542531
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 13 Vol. 71; ISSN 0003-6951; ISSN APPLAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT ALLOYS
CRYSTAL STRUCTURE
CURIE POINT
FERROMAGNETIC MATERIALS
INTERMETALLIC COMPOUNDS
LANTHANUM ALLOYS
LATTICE PARAMETERS
MAGNETIC MOMENTS
MAGNETIZATION
TITANIUM ALLOYS
X-RAY DIFFRACTION