Influence of Spark Plasma Sintering on Microstructure and Properties of Bulk LaCaSrMnO Magnetocaloric Materials

• Authors: K. Zmorayová , V. Antal , J. Kováč , P. Diko , J. Noudem
• Languages of publication: EN

Abstracts

EN

Polycrystalline La_{0.67}Ca_{0.33-x}Sr_xMnO₃ (x=0.33, 0.03, 0) (LCSM) perovskite samples treated by spark plasma sintering technique were investigated. This study proved influence of the sintering temperature on microstructure of these perovskite ceramics. The thermogravimetric measurements revealed the possibility of increase of oxygen content in studied LCSM samples by additional annealing under oxygen atmosphere and low temperature. Finally, the effect of this annealing on magnetic properties was demonstrated.

Keywords

EN

75.47.Lx; 61.72.-y; 75.30.Kz; 77.80.B-; 81.70.Pg; 81.20.Ev; 81.30.Fb

Discipline

• 77.80.B-: Phase transitions and Curie point(for Curie point in ferromagnetic materials, see 75.30.Kz)
• 81.30.Fb: Solidification
• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation
• 75.47.Lx: Magnetic oxides
• 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)
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)
• 81.70.Pg: Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 804-806

Dates

published

2017-04

Contributors

author

K. Zmorayová

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia

author

V. Antal

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia

author

J. Kováč

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia

author

P. Diko

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia

author

J. Noudem

• CRISMAT, UMR 6508 CNRS/ENSICAEN, Université de Caen Normandie, 6 Bd Maréchal Juin, 14050 Caen Cedex 04, France

References

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• [3] K. Zmorayova, S. Piovarči, M. Radusovska, V. Antal, V. Kavečanský, P. Diko, Mater. Sci. Forum 782, 503 (2014), doi: 10.4028/www.scientific.net/MSF.782.503
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• [5] J.G. Noudem, S. Quetel-Weben, R. Retoux, G. Chevallier, C. Estournès, Scr. Mater. 68, 949 (2013), doi: 10.1016/j.scriptamat.2013.02.059

Identifiers

DOI

10.12693/APhysPolA.131.804