Influence of magnetic ordering on electronic structure of Tb 3+ ion in TbFe 3 (BO 3 ) 4 crystal
Optical absorption spectra of trigonal crystal TbFe 3 (BO 3 ) 4 have been studied in the region of 7 F 6 → 5 D 4 transition in Tb 3+ ion depending on temperature (2–220 K) and on magnetic field (0–60 kOe). Splitting of the Tb 3+ excited states, both under the influence of the external magnetic field and effective exchange field of the Fe-sublattice, have been determined. Landé factors of the excited states have been found. Stepwise splitting of one of the absorption lines has been discovered in the region of the Fe-sublattice magnetic ordering temperature. This is shown to be due to the abrupt change of equilibrium geometry of the local Tb 3+ ion environment only in the excited state of the Tb 3+ ion. In general, the magnetic ordering is accompanied by temperature variations of the Tb 3+ local environment in the excited states. The crystal field splitting components have been identified. In particular, it has been shown that the ground state (in D 3 symmetry approximation) consists of two close singlet states of A 1 and A 2 type, which are split and magnetized by effective exchange field of the Fe-sublattice. Orientations of magnetic moments of the excited electronic states relative to that of the ground state have been experimentally determined in the magnetically ordered state of the crystal. A pronounced shift of one of absorption lines has been observed in the vicinity of the TbFe 3 (BO 3 ) 4 structural phase transition. The temperature interval of coexistence of the phases is about 3 K. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2011
Volume (Year): 80 (2011)
Issue (Month): 1 (March)
|Contact details of provider:|| Web page: http://www.springer.com|
Web page: http://publications.edpsciences.org/
|Order Information:||Web: http://www.springer.com/economics/journal/10051|
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Wulong Gu & Amélie Lafrance, 2010.
"Productivity Growth in Canadian and U.S. Regulated Industries,"
International Productivity Monitor,
Centre for the Study of Living Standards, vol. 19, pages 50-65, Spring.
- Gu, Wulong & Lafrance, Amelie, 2008. "Productivity Growth in Canadian and U.S. Regulated Industries," The Canadian Productivity Review 2008020e, Statistics Canada, Economic Analysis.
When requesting a correction, please mention this item's handle: RePEc:spr:eurphb:v:80:y:2011:i:1:p:1-10. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Sonal Shukla)or (Rebekah McClure)
If references are entirely missing, you can add them using this form.