Identification of the Domain Walls Configuration in the Ferroelastic Nanosize Material La_{0.95}Sr_{0.05}Ga_{0.9}Mg_{0.1}O_{3-x}

• Authors: D. Savytskii , C. Paulmann , U. Bismayer , M. Berkowski
• Languages of publication: EN

Abstracts

EN

This paper deals with the identification of multidomain configuration in ferroelastic phases of La_{0.95}Sr_{0.05}Ga_{0.9}Mg_{0.1}O_{3-x} using polychromatic synchrotron X-ray radiation (Laue method). A nondestructive approach for the determination of domain misorientations, orientation of domain walls and their configuration in the nanosize ferroelastic domain structure was developed. The proposed approach can be used to study the nanosize ferroelastic domain structure in small crystals of submillimeter sizes at different external fields, including temperature. The ferroelastic domain structure in the orthorhombic as well as in the rhombohedral phases of La_{0.95}Sr_{0.05}Ga_{0.9}Mg_{0.1}O_{3-x} crystals has been identified. The intersection of walls leads to the formation of a chevron-like pattern. The observed reversibility of domain patterns during temperature cycles is probably caused by the interaction of domain boundaries with point defects, most likely oxygen vacancies.

Keywords

EN

61.72.Mm; 61.72.-y; 61.50.Ah

Discipline

• 61.50.Ah: Theory of crystal structure, crystal symmetry; calculations and modeling
• 61.72.Mm: Grain and twin boundaries
• 61.72.-y: Defects and impurities in crystals; microstructure(for radiation induced defects, see 61.80.-x; for defects in surfaces, interfaces, and thin films, see 68.35.Dv and 68.55.Ln; see also 85.40.Ry Impurity doping, diffusion, and ion implantation technology; for effects of crystal defects and doping on superconducting transition temperature, see 74.62.Dh)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 117
• Issue: 1
• Pages: 62-73

Dates

published

2010-01

Contributors

author

D. Savytskii

• Lviv Polytechnic National University, 12 Bandera St., 79013 Lviv, Ukraine
• SRC "Carat", 202 Stryjska St., 79031 Lviv, Ukraine

author

C. Paulmann

• Universität Hamburg, Grindelallee 48, D-20146 Hamburg, Germany
• HASYLAB, DESY, Notkestr. 85, D-22603 Hamburg, Germany

author

U. Bismayer

• Universität Hamburg, Grindelallee 48, D-20146 Hamburg, Germany

author

M. Berkowski

• Institute of Physics, al. Lotników 32/46, 02-668 Warsaw, Poland

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Identifiers

DOI

10.12693/APhysPolA.117.62