Temperature Evolution of the Intra-Ion Absorption Spectra of Cobalt in (NH2(CH3)2)2CoCl4 Crystals

被引：6
作者：
Kapustianyk, V. B. [1 ,2 ]
Yonak, P. K. [1 ]
Rudyk, V. P. [2 ]
机构：
[1] Ivan Franko Natl Univ Lviv, UA-79005 Lvov, Ukraine
[2] Ivan Franko Natl Univ Lviv, Sci Tech & Educ Ctr Low Temp Studies, UA-79005 Lvov, Ukraine
来源：
JOURNAL OF APPLIED SPECTROSCOPY | 2015年 / 82卷 / 04期
关键词：
absorption band; cation and anion substitution; crystal field; absorption coefficient; electronic transition; PHASE-TRANSITIONS; (N(CH3)4)2COCL4;
D O I：
10.1007/s10812-015-0150-8
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
On the basis of spectroscopic studies of (NH (2) (CH (3) ) (2) ) (2) CoCl (4) crystals the absorption bands corresponding to the internal electronic transitions in the Co (2+) ion were identified. The values of Dq and Racah crystal field parameters at room temperature were calculated. Patterns of changes in these parameters upon isomorphous cation and anion substitution were defined for the A (2) CoCl (4) family of crystals, where D = NH (2) (CH (3) ) (2) (+) , NH (2) (C (2) H (5) ) (2) (+) , N(CH (3) ) (4) (+) , N(C (2) H (5) ) (4) (+) . Evolution of the absorption spectra of (NH (2) (CH (3) ) (2) ) (2) CoCl (4) crystals in the region of their phase transitions at 238 and 263 K was investigated.
引用
收藏
页码：591 / 597
页数：7
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