A. I. Najafov, N. N. Mursakulov, M. M. Shirinov, T. G. Mammadov, I. A. Mamedova, N. A. Abdullayev
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引用次数: 0
Abstract
The alloys of the TlInTe2–Fe system were studied by differential thermal analysis, X-ray diffraction, and microstructural analysis. The solubility range of iron in the TlInTe2 compound was determined to be 5.0 at % at 296 K. Solid solutions formed on the basis of the ternary compound TlInTe2 in the TlInTe2–Fe system are predominantly interstitial solid solutions, with iron atoms located mainly in the octahedral voids along the c axis between thallium ions. The appearance of a new mode at ~120 cm–1 in the Raman scattering spectra of single-crystal TlInTe2 samples doped with 5.0 at % Fe was observed. It was found that the incorporation of iron atoms into the TlInTe2 crystal lattice lowers the activation energy of impurity conductivity and increases the crystal’s conductivity due to the rise in charge carrier concentration.
采用差热分析、x射线衍射和显微组织分析对TlInTe2-Fe系合金进行了研究。在296 K时，铁在TlInTe2化合物中的溶解度范围为5.0 at %。在TlInTe2 - fe体系中，以三元化合物TlInTe2为基础形成的固溶体以间隙固溶体为主，铁原子主要位于铊离子之间沿c轴的八面体空隙中。在掺杂5.0 at % Fe的单晶TlInTe2样品的拉曼散射光谱中，在~120 cm-1处出现了新的模式。研究发现，铁原子掺入TlInTe2晶格后，由于载流子浓度的升高，杂质电导率的活化能降低，晶体电导率提高。
期刊介绍：
Presents the latest results from Russia’s leading researchers in condensed matter physics at the Russian Academy of Sciences and other prestigious institutions. Covers all areas of solid state physics including solid state optics, solid state acoustics, electronic and vibrational spectra, phase transitions, ferroelectricity, magnetism, and superconductivity. Also presents review papers on the most important problems in solid state physics.
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