Spectroscopic studies of magnetic transitions in TbPO[sub 4]

Journal Article · Sun May 15 04:00:00 EDT 1994 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.356769· OSTI ID:7274007

Liu, G K; Loong, C; Trouw, F ^[1]; Abraham, M M; Boatner, L A ^[2]

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1. Chemistry and Intense Pulsed Neutron Source Division, Argonne National Laboratory, Argonne, Illinois 60439-4814 (United States)
2. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6056 (United States)

In TbPO[sub 4], an antiferromagnetic-phase transition is accompanied by a cooperative Jahn--Teller effect involving a Tb ion-lattice coupling that induces a tetragonal-to-monoclinic distortion of the crystal lattice and an associated readjustment of the Tb electronic states as required by the lowering of the rare-earth-site symmetry. The laser-excitation and emission spectra of TbPO[sub 4] and 0.1% Tb-doped YPO[sub 4] single crystals were studied at temperatures below and above the phase transitions. The line shapes of transitions in the stoichiometric compound are unusually broad and asymmetric while those observed for the dilute compound are relatively sharp. In addition, the TbPO[sub 4] spectra show an anomalous temperature dependence near the phase transition, indicating strong interactions of the rare-earth ions with their local environments. In the present work, a comparison of the optical results with the results of new neutron-scattering measurements is made.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38; AC05-84OR21400
• OSTI ID: 7274007
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 75:10; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
ALLOYS
EMISSION SPECTRA
JAHN-TELLER EFFECT
MAGNETIC PROPERTIES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
SPECTRA
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TERBIUM ADDITIONS
TERBIUM ALLOYS
TERBIUM PHOSPHATES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM PHOSPHATES