Elastic anomaly and internal friction of Ba0.5Sr0.5Co0.8Fe0.2O3-δ and La0.58Sr0.4Co0.2Fe0.8O3-δ

Elastic anomaly and internal friction of Ba0.5Sr0.5Co0.8Fe0.2O3-δ and La0.58Sr0.4Co0.2Fe0.8O3-δ

Elastic modulus and internal friction of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) and La0.58Sr0.4Co0.2Fe0.8O3-δ (LSCF) were determined from resonance frequencies and damping behavior, respectively, using an impulse excitation method. An elastic anomaly for BSCF around 476 K, with a corresponding peak in the...

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Veröffentlicht in:Journal of materials research 2011-06, Vol.26 (11), p.1388-1391
Hauptverfasser: Huang, Bingxin, Malzbender, Jürgen, Steinbrech, Rolf W.
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Sprache:eng
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Anomalies
Applied and Technical Physics
Biomaterials
Inorganic Chemistry
Internal friction
Materials Engineering
Materials Science
Nanotechnology
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container_end_page 1391
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container_title Journal of materials research
container_volume 26
creator Huang, Bingxin
Malzbender, Jürgen
Steinbrech, Rolf W.
description Elastic modulus and internal friction of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) and La0.58Sr0.4Co0.2Fe0.8O3-δ (LSCF) were determined from resonance frequencies and damping behavior, respectively, using an impulse excitation method. An elastic anomaly for BSCF around 476 K, with a corresponding peak in the internal friction, is attributed to the experimentally confirmed spin transition of Co3+. LSCF is in a ferromagnetic state below ∼220 K and in a paramagnetic state above ∼250 K. The elastic modulus of LSCF exhibits an anomaly between 473 and 1113 K, which is attributed to a transition from rhombohedral to cubic symmetry.
doi_str_mv 10.1557/jmr.2011.164
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An elastic anomaly for BSCF around 476 K, with a corresponding peak in the internal friction, is attributed to the experimentally confirmed spin transition of Co3+. LSCF is in a ferromagnetic state below ∼220 K and in a paramagnetic state above ∼250 K. 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An elastic anomaly for BSCF around 476 K, with a corresponding peak in the internal friction, is attributed to the experimentally confirmed spin transition of Co3+. LSCF is in a ferromagnetic state below ∼220 K and in a paramagnetic state above ∼250 K. 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subjects Anomalies
Applied and Technical Physics
Biomaterials
Inorganic Chemistry
Internal friction
Materials Engineering
Materials Science
Nanotechnology
title Elastic anomaly and internal friction of Ba0.5Sr0.5Co0.8Fe0.2O3-δ and La0.58Sr0.4Co0.2Fe0.8O3-δ
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