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Acta Physica Sinica (Overseas Edition), 1997, Vol. 6(6): 429-439    DOI: 10.1088/1004-423X/6/6/005
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

INFLUENCE OF HIGH PRESSURE ON EMISSION SPECTRA AND CRYSTAL FIELD STRENGTH FOR Eu3+ IN GdOBr

CHI YUAN-BIN (池元斌)a, LIU SHEN-XIN (刘慎薪)b, LI HONG-NIAN (李宏年)a, ZHAO XU-YI (赵绪义)b, WANG LI-ZHONG (王立中)a
a National Laboratory of Superhard Materials, Jilin University, Changchun 130023, China; b Changchun Institute of Physics, Academia Sinica, Changchun 130021, China
Abstract  The emission spectra of the Eu3+ ion in GdOBr∶Eu3+ were measured in the range of pressure from 0 GPa to 12.4 GPa. The energy level schemes establis hed from the spectra show that the splittings of the 7F1,7F3 and 5D1 multiplets decrease obviously with increasing pressure. The crystal-field parameters Bkq and the crystal-field strength parameter S versus Bkq were determined at different pressures. With pressurization S reduces and the J-mixings of the state functions for the Eu3+ ion decrease, which is in agreement with the decrease of the multiplet splittings. This shows that for Eu3+ in REOX∶Eu3+ the diminution of the crystal-field strength with pressure, the authenticity of which is under suspicion for several years, is certain.
Received:  27 August 1996      Revised:  19 November 1996      Accepted manuscript online: 
PACS:  71.70.Ch (Crystal and ligand fields)  
  78.55.Hx (Other solid inorganic materials)  
  62.50.-p (High-pressure effects in solids and liquids)  
Fund: Project supported by the National Natural Science Foundation of China.

Cite this article: 

CHI YUAN-BIN (池元斌), LIU SHEN-XIN (刘慎薪), LI HONG-NIAN (李宏年), ZHAO XU-YI (赵绪义), WANG LI-ZHONG (王立中) INFLUENCE OF HIGH PRESSURE ON EMISSION SPECTRA AND CRYSTAL FIELD STRENGTH FOR Eu3+ IN GdOBr 1997 Acta Physica Sinica (Overseas Edition) 6 429

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