Synthesis, sintering, specific heat and magnetism of Eu3S4 by low-temperature CS2-gas sulfurization of Eu2O3 nanospheres

• Autorzy: Chen Y. , Li L. , Hirai S.

Identyfikatory

DOI

10.2478/msp-2018-0097

• Języki publikacji: EN

Abstrakty

EN

Single-phase Eu₃S₄ was obtained via CS₂ gas sulfurization of Eu₂O₃ nanospheres at 773 K for longer than 0.5 h. The primary particle size of Eu₃S₄ became larger than that of Eu₂O₃ during the sulfurization process. Pure synthetic Eu₃S₄ powders were unstable and transformed to EuS at 873 K under vacuum. Eu₃S₄ compacts were sintered in temperature range of 773 K to 1173 K and they transformed to EuS at 1473 K during spark plasma sintering. Specific heat of sintered Eu₃S₄did not show an anomalous behavior in the range of 2 K to 50 K. The magnetic susceptibility of polycrystalline Eu₃S₄ followed a Curie-Weiss law from 2 K to 300 K. Magnetization of polycrystalline Eu₃S₄ was larger than that of single crystal Eu₃S₄ when the magnetic field was less than 3.5 kOe.

Słowa kluczowe

EN

Eu3S4; mixed-valence compound; inhomogeneous compound; CS2-gas sulfurization; specific heat; magnetic properties

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2018
• Tom: Vol. 36, No. 4
• Strony: 616--622
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Chen Y.

• School of Mechanical Engineering, Shanghai Dian Ji University, Shanghai 201306, China
• Department of Materials Science and Engineering, Muroran Institute of Technology, Muroran 050-8585, Japan

autor

Li L.

• Department of Materials Science and Engineering, Muroran Institute of Technology, Muroran 050-8585, Japan

autor

Hirai S.

• Department of Materials Science and Engineering, Muroran Institute of Technology, Muroran 050-8585, Japan

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).