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

doi:10.1088/1004-423X/6/6/005

中国物理B ›› 1997, Vol. 6 ›› Issue (6): 429-439.doi: 10.1088/1004-423X/6/6/005

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

刘慎薪¹, 赵绪义¹, 池元斌², 李宏年², 王立中²

(1)Changchun Institute of Physics, Academia Sinica, Changchun 130021, China; (2)National Laboratory of Superhard Materials, Jilin University, Changchun 130023, China

收稿日期:1996-08-27 修回日期:1996-11-19 出版日期:1997-06-20 发布日期:1997-06-20
基金资助:
Project supported by the National Natural Science Foundation of China.

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

Received:1996-08-27 Revised:1996-11-19 Online:1997-06-20 Published:1997-06-20
Supported by:
Project supported by the National Natural Science Foundation of China.

摘要/Abstract

摘要： 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 B^k_q and the crystal-field strength parameter S versusB^k_q 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.

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 B^k_q and the crystal-field strength parameter S versus B^k_q 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.

中图分类号: (Crystal and ligand fields)

71.70.Ch

78.55.Hx (Other solid inorganic materials) 62.50.-p (High-pressure effects in solids and liquids)

池元斌, 刘慎薪, 李宏年, 赵绪义, 王立中. INFLUENCE OF HIGH PRESSURE ON EMISSION SPECTRA AND CRYSTAL FIELD STRENGTH FOR Eu³⁺ IN GdOBr[J]. 中国物理B, 1997, 6(6): 429-439.

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[J]. Acta Physica Sinica (Overseas Edition), 1997, 6(6): 429-439.

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

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

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