The Application of the Profile Analysis of Diffraction Peaks for Determination of the Phase Relationships in the (1 – 2x)BiScO3 ⋅ xPbTiO3 ⋅ xPbMg1/3Nb2/3O3 System near the Morphotropic Phase Boundary

Autor:	A. G. Segalla, A. I. Spitsin, A. A. Bush, V. P. Sirotinkin
Rok vydání:	2020
Předmět:	Diffraction Phase boundary Materials science General Chemical Engineering Metals and Alloys Analytical chemistry Le Bail method Inorganic Chemistry Tetragonal crystal system Phase (matter) visual_art Materials Chemistry visual_art.visual_art_medium Profile analysis Ceramic
Zdroj:	Inorganic Materials. 56:1462-1466
ISSN:	1608-3172 0020-1685
Popis:	To determine the phase relationships in the (1 – 2x)BiScO3 ⋅ xPbTiO3 ⋅ xPbMg1/3Nb2/3O3 system near the morphotropic phase boundary, the ceramic samples for x = 0.34 and x = 0.46 were studied by the XRD method. The profiles of nine regions of the XRD patterns were analyzed using the WinFit software program. In both cases, the best agreement with the experimental data was observed when additional phases with the cubic symmetry were introduced. Simulation of the full X-ray diffraction patterns of the samples using the Le Bail method showed that the samples under study contained two phases: the main phase with a cubic (a = 4.0432 A) (x = 0.34) and a tetragonal (a = 3.9963 A, c = 4.0580 A) (x = 0.46) unit cell and an additional one. The additional phases with broad diffraction peaks can be considered to be cubic ones with the unit cell parameters a = 4.045 A and a = 4.017 A, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3dda8cb9855109f7d13d884ebec7775d https://doi.org/10.1134/s0020168520150170 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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