Structural and magnetic properties of FeCr2S4 spinel prepared by field-activated sintering and conventional solid-state synthesis

• Published in: Journal of materials science Vol. 43; no. 2; pp. 660 - 664
• Main Authors: Zestrea, V, Kodash, V. Y, Felea, V, Petrenco, P, Quach, D. V, Groza, Joanna R, Tsurkan, Vladimir
• Format: Journal Article
• Language: English
• Published: Boston Springer US 2008; Springer; Springer Nature B.V
• Subjects: Activated sintering; Applied sciences; Building materials. Ceramics. Glasses; Ceramic industries; Characterization and Evaluation of Materials; Chemical industry and chemicals; Chemistry and Materials Science; chromium; Classical Mechanics; Crystal structure; Crystallography and Scattering Methods; crystals; disorders; Electrotechnical and electronic ceramics; Exact sciences and technology; Ferrimagnetism; iron; Low temperature; Magnetic properties; Magnetic semiconductors; Materials Science; Polymer Sciences; semiconductors; Solid Mechanics; Solid state; Spinel; sulfides; Superconducting quantum interference devices; Synthesis; Technical ceramics; temperature; X-radiation; Spark Plasma Sinter; Fast Sample; Rietveld Refinement; Cr2S3; Magnetic Anomaly; Scanning electron microscopy; Plasma; Chromium Sulfides; Chromium Iron Sulfides Mixed; Semiconducting ceramics; Experimental study; X ray diffraction; Iron Sulfides; Non oxide ceramics; Sulfides; Spark discharge; Magnetic material; Spinels; Sintering; Solid state reaction; Manufacturing; Microstructure; Structural analysis; Magnetic properties
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-007-2168-7

We report on the fast preparation of the ternary magnetic semiconductor spinel FeCr₂S₄ using the Field-Activated Sintering Technique (FAST). The structural (X-ray) and magnetic (Squid) characterization demonstrates a similarity of the properties of the FAST crystals and those prepared by conventional solid-state synthesis. Residual structural disorder in FAST samples has a pronounced influence on the ferrimagnetic–paramagnetic transition and the orbital ordering at low temperatures.