Phonon and magnetic excitations in neodymium pentaphosphate
- Argonne National Lab., IL (United States)
- Shandong Univ., Jinan (China); and others
The structure of NdP{sub 5}O{sub 14} consists of cross-linked double chains of corner-sharing PO{sub 4} tetrahedra extending parallel to the crystallographic a-axis. Each Nd atom is coordinated by 8 oxygen atoms. The NdO{sub 8} polyhedra are isolated from each other and share no common oxygen atoms. High-gain and long-lifetime laser action had been reported in NdP{sub 5}O{sub 14} crystals. The neutron excitation spectra reveal a one-phonon density of states extended to about 180 meV with several distinct P-O stretching bands at high energies. These features reflect the existence of different P-O bond lengths among the terminal and bridging configurations and the associated atomic dynamics. Furthermore, magnetic scattering from Nd ions permitted the determination of the energy-level structure of the crystal-field-split Nd:{sup 4}I{sub 9/2} ground term.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 555234
- Report Number(s):
- ANL/IPNS/CP-93089; CONF-970814-; ON: DE97054131; TRN: 98:008707
- Resource Relation:
- Conference: International conference on neutron scattering (ICNS), Toronto (Canada), 17-21 Aug 1997; Other Information: PBD: 14 Jul 1997
- Country of Publication:
- United States
- Language:
- English
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