Peculiarities of Elastic Properties of RE Cobaltites RBaCo₄O₇ (R = Dy - Er, Y) at Magnetic Phase Transitions

Abstract:

It has been found that the temperature dependences of the Young’s modulus for rare-earth cobaltites RBaCo₄O₇ (R = Dy - Er, Y) exhibit significant hysteresis and irreversible effects over a wide range (80–280) K between the structural and magnetic phase transition temperatures. At the magnetic phase transition temperature, there are weak and smoothed anomalies of the Young’s modulus, which correlate with the low dimensionality and frustration of the exchange interactions in the Kagome lattice of the Co subsystem for the studied rare-earth cobaltites.

• Periodical: Solid State Phenomena (Volumes 233-234)
• Pages: 145-148
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.233-234.145
• Online since: July 2015
• Authors: Zoya Kazei*, Vyacheslav Snegirev, Alexander Andreenko, Ludmila Kozeeva, Margarita Kameneva
• Keywords: Frustration, Internal Friction, Kagome Lattice, Magnetic Phase Transitions, Rare-Earth Cobaltites, Structural Phase Transitions, Young's Modulus

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