کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5458548 1398756 2018 7 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله
Comparative study of the phase transitions and spectral properties of NH2(CH3)2Me1-хСrx(SO4)2×6H2O (Me = Al, Ga) ferroelectrics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Comparative study of the phase transitions and spectral properties of NH2(CH3)2Me1-хСrx(SO4)2×6H2O (Me = Al, Ga) ferroelectrics
چکیده انگلیسی
This article is devoted to study of Cr3+ ion complexes in NH2(CH3)2Me1-xCrx(SO4)2 × 6H2O, Me = Al, Ga (DMAMe1-xCrxS) crystals. On the basis of spectroscopic data the energy diagram and the parameters of the crystal field corresponding to the above mentioned complexes were specified. It was shown that isomorphous substitution of the metal ion practically does not affect the temperature of ferroelectric-ferroelastic phase transition in NH2(CH3)2Ga1-xCrx(SO4)2 × 6H2O contrary to the case of NH2(CH3)2Al1-xCrx(SO4)2 × 6H2O crystal. The structure and temperature changes of the absorption spectra of the above mentioned solid solutions are explained in terms of the internal electronic transitions in [Сr(H2O)6]3+ octahedral complexes. The symmetry and distortion of the complexes within the structure of all investigated crystals were analyzed on the basis of the Raman spectroscopy data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 730, 5 January 2018, Pages 417-423
نویسندگان
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