The structure and spin dynamics of lanthanide-bearing silicate glasses

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

DOI:https://doi.org/10.1063/1.356797· OSTI ID:7072439

Ellison, A J.G.; Loong, C; Wagner, J ^[1]

---

1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)

The structure of 3Na[sub 2]O[center dot]R[sub 2]O[sub 3][center dot]6SiO[sub 2] (R=Nd, Yb and Lu) glasses has been studied by time-of-flight neutron diffraction. The average Si-O and O-O nearest-neighbor coordination is found to be similar to those of the SiO[sub 4] tetrahedral units in vitreous SiO[sub 2] and other silicate glasses. The rare-earth (RE) ions coordinate with no more than seven nearest-neighbor oxygen atoms. The dynamic and static response of these glasses and their isochemical crystalline analogs has been investigated by inelastic neutron scattering and magnetic susceptibility measurements. The magnetic excitation spectra were analyzed by a ligand-field model using a method of descending symmetry. The correlation between short-range atomic order in a network glass and magnetic interactions of the RE ions with the local environment is discussed.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7072439
• 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
360602* -- Other Materials-- Structure & Phase Studies
360606 -- Other Materials-- Physical Properties-- (1992-)
ALKALI METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COORDINATION NUMBER
DIFFRACTION
GLASS
INELASTIC SCATTERING
LUTETIUM COMPOUNDS
LUTETIUM OXIDES
MAGNETIC PROPERTIES
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
NEUTRON DIFFRACTION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
SILICON COMPOUNDS
SILICON OXIDES
SODIUM COMPOUNDS
SODIUM OXIDES
YTTERBIUM COMPOUNDS
YTTERBIUM OXIDES