Spin waves in the cubic ferrimagnet Ho$sub 0$$.$$sub 8$$sub 8$Tb$sub 0$$.$$sub 12$Fe$sub 2$

Journal Article · Mon Mar 01 04:00:00 EST 1976 · Phys. Rev. Lett., v. 36, no. 10, pp. 532-536

OSTI ID:4057434

Nicklow, R M; Koon, N C; Williams, C M; Milstein, J B

Using neutron spectrometey, we have investigated the magnon dispersion relation for the ferrimagnetic cubic Laves compound Ho$sub 0$$.$$sub 8$$sub 8$Tb$sub 0$$.$$sub 12$ Fe$sub 2$ at room temperature and 12 K. The results are described surprisingly well by a very simple near-neighbor exchange model which includes only iron--iron and iron--rare-earth interactions, crystal field anisotropy, and temperature renormalization that is derived from the sublattice magnetization. (AIP)

• Research Organization: Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• NSA Number: NSA-33-030242
• OSTI ID: 4057434
• Journal Information: Phys. Rev. Lett., v. 36, no. 10, pp. 532-536, Journal Name: Phys. Rev. Lett., v. 36, no. 10, pp. 532-536; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

*HOLMIUM ALLOYS-- SPIN WAVES
*IRON BASE ALLOYS-- SPIN WAVES
*TERBIUM ALLOYS-- SPIN WAVES
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CRYSTAL FIELD
DISPERSION RELATIONS
EXCHANGE INTERACTIONS
FERRIMAGNETIC MATERIALS
FERRIMAGNETISM
LAVES PHASES
MAGNETIZATION
MAGNONS
MEDIUM TEMPERATURE
N50230* --Metals
Ceramics
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Structure & Phase Studies
NEUTRON SPECTROSCOPY
ULTRALOW TEMPERATURE