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Title: Determination of g-tensors of low-symmetry Nd{sup 3+} centers in LiNbO{sub 3} by rectification of angular dependence of electron paramagnetic resonance spectra

Two procedures for facilitation of line tracing and deciphering of complicated spectra of electron paramagnetic resonance (EPR) were developed: a correction of microwave frequencies for every orientation of external magnetic field on the base of known values of g-tensor components for a reference paramagnetic center and followed rectification of measured angular dependences using plots of effective deviation of g{sup 2}-factors of observed lines from effective g{sup 2}-factors of the reference center versus angles or squared cosines of angles describing magnetic field orientations. Their application to EPR spectra of nearly stoichiometric lithium niobate crystals doped with neodymium allowed identifying two axial and six different low-symmetry Nd{sup 3+} centers, to determine all components of their g-tensors, and to propose common divacancy models for a whole family of Nd{sup 3+} centers.
Authors:
;  [1] ;  [2] ;  [3]
  1. Physics Department, Montana State University, Bozeman, Montana 59717 (United States)
  2. Quantel Laser, Bozeman, Montana 59715 (United States)
  3. Institute of Physical Researches, Ashtarak (Armenia)
Publication Date:
OSTI Identifier:
22494647
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRYSTALS; DOPED MATERIALS; ELECTRON SPIN RESONANCE; LITHIUM COMPOUNDS; MAGNETIC FIELDS; MICROWAVE RADIATION; NEODYMIUM; NEODYMIUM IONS; NIOBATES; PARAMAGNETISM; SPECTRA; STOICHIOMETRY; TENSORS