Cr3+ centres in LiNbO3 : Experimental and theoretical investigation of spin hamiltonian parameters
Authors:
- T.H. Yeom,
- Y.M. Chang,
- Czesław Zygmunt Rudowicz,
- S.H. Choh
Abstract
X-band EPR spectra of Cr3+ ions in ferroelectric LiNbO3 single crystal at room temperature are analyzed assuming Cr3+ enters either of the three possible sites: Li, Nb and structural vacancy (SV) site. The observed spectra can be resolved into (I) the main (Cr13+) and (II) the weak (CrII3+) spectra. The axial zero-field splitting parameter for a Cr3+ centre at Li site (DLi) as well as Nb site (DNb) is calculated using the superposition model. The values DLi and DNb agree well with the experimental D value for CrI3+ and CrII3+, respectively. This confirms that the main spectra can be attributed to CrI3+ at the Li site and the weak spectra to CrII3+ at the Nb site. For Cr3+ ion at the structural vacancy site the parameter DSV is calculated as a function of displacement of Cr3+ ion from the centre of the oxygen octahedron along the [1 1 1] direction. Other weak and unresolve spectra also observed by us can possibly be due to Cr3+ centres at vacancy site. © 1993.
- Record ID
- UAMd030b107ed64453d83281c64280f3aa8
- Author
- Journal series
- Solid State Communications, ISSN 0038-1098
- Issue year
- 1993
- Vol
- 87
- Pages
- 245-249
- ASJC Classification
- ; ;
- DOI
- DOI:10.1016/0038-1098(93)90485-6 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 0
- Score source
- journalList
- Publication indicators
- = 33; = 36; : 1999 = 0.862; : 2006 (2 years) = 1.556 - 2007 (5 years) =1.625
- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAMd030b107ed64453d83281c64280f3aa8/
- URN
urn:amu-prod:UAMd030b107ed64453d83281c64280f3aa8
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.