NQR investigation of crystal structure peculiarities of layered Pbₓ₋₁Cdₓl₂ semiconductors

• Дата: 2008
• Автори: Gnatenko, Yu.P., Beinik, I.A., Barabash, A.I., Vertegel, I.G., Chesnokov, E.D., Ovcharenko, A.I., Ivanova, L.S.
• Формат: Стаття
• Мова: English
• Опубліковано: НТК «Інститут монокристалів» НАН України 2008
• Назва видання: Functional Materials
• Теми: Characterization and properties
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/134552
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: NQR investigation of crystal structure peculiarities of layered Pbx-1CdxI2 semiconductors // Yu.P. Gnatenko, I.A. Beinik, A.I. Barabash, I.G. Vertegel, E.D. Chesnokov, A.I. Ovcharenko, L.S. Ivanova // Functional Materials. — 2008. — Т. 15, № 2. — С. 175-177. — Бібліогр.: 9 назв. — англ.

The ¹²⁷l NQR spectra of semiconductor mixed crystals Pbₓ₋₁Cdₓl₂ at 77 K have been investigated. It is shown that at low values of Cdl₂ concentration, the intra-layer symmetry of the basic crystal becomes distorted considerably. This occurs due to formation of the intra-layer mechanical strains which are defined by the size difference between the main and impurity atoms (Pb and Cd, respectively). At x>0.10, intra-layer heterophasic two-dimensional Cdl₂ islets have been shown to be formed. The results are discussed that evidence the formation of amorphous glassy phase of the mixed Pbₓ₋₁Cdₓl₂ crystal at x>0.10.