0

Exploring Mesoscopic Physics of Vacancy-Ordered Systems Through Atomic Scale Observations of Topological Defects

A Y Borisevich, A N Morozovska, Young-Min Kim, D Leonard, M P Oxley, M D Biegalski, E A Eliseev, S V Kalinin

Phys Rev Lett. 2012 Aug 10;109(6):065702.

PMID: 23006281

Abstract:

Vacancy-ordered transition metal oxides have multiple similarities to classical ferroic systems including ferroelectrics and ferroelastics. The expansion coefficients for corresponding Ginzburg-Landau-type free energies are readily accessible from bulk phase diagrams. Here, we demonstrate that the gradient and interfacial terms can quantitatively be determined from the atomically resolved scanning transmission electron microscopy data of the topological defects and interfaces in model lanthanum-strontium cobaltite. With this knowledge, the interplay between ordering, chemical composition, and mechanical effects at domain walls, interfaces and structural defects can be analyzed.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP108916092 Lanthanum strontium cobaltite, LSC-82 Lanthanum strontium cobaltite, LSC-82 108916-09-2 Price
qrcode