Influence of the annealing conditions on temperature-dependent ferroelastic behavior of LSCF

Rieß K, Geiger P, Khansur NH, Steiner S, Frömling T, Hinterstein M, Webber KG (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Book Volume: 6

Article Number: 100297

DOI: 10.1016/j.mtla.2019.100297

Abstract

The macroscopic ferroelastic behavior of polycrystalline (La 0.6 Sr 0.4 ) 0.95 Co 0.2 Fe 0.8 O 3 − δ and its dependence on annealing conditions was investigated over a temperature range from −150 °C to 150 °C. A temperature- and defect concentration-dependent variation of the ferroelastic behavior was attributed to internal stresses, oxygen deficiency, and a corresponding change of the crystal structure. In particular, there was an observed decrease in remanent strain and the formation of a closed ferroelastic hysteresis loop at temperatures below approximately 0 °C for samples annealed in air, which was suppressed through the reduction in oxygen vacancies by annealing the samples in oxygen. The macroscopic mechanical behavior as a function of annealing conditions is discussed with respect to the crystal structure and oxygen deficiency determined by means of x-ray and neutron diffraction.

Authors with CRIS profile

Involved external institutions

Technische Universität Darmstadt Germany (DE) Karlsruhe Institute of Technology (KIT) Germany (DE)

How to cite

APA:

Rieß, K., Geiger, P., Khansur, N.H., Steiner, S., Frömling, T., Hinterstein, M., & Webber, K.G. (2019). Influence of the annealing conditions on temperature-dependent ferroelastic behavior of LSCF. Materialia, 6. https://dx.doi.org/10.1016/j.mtla.2019.100297

MLA:

Rieß, Kevin, et al. "Influence of the annealing conditions on temperature-dependent ferroelastic behavior of LSCF." Materialia 6 (2019).

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