<abstract xmlns="http://www.w3.org/1999/xhtml">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 Eu3S4 did 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.</abstract>

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 Eu3S4 did 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.

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

Department of Materials Science and Engineering, Muroran Institute of Technology

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Synthesis, sintering, specific heat and magnetism of EuS by low-temperature CS-gas sulfurization of EuO nanospheres

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...

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

Published Online: Feb 01, 2019

Page range: 616 - 622

Received: May 04, 2017

Accepted: Oct 19, 2018

DOI: https://doi.org/10.2478/msp-2018-0097

Keywords
EuS, mixed-valence compound, inhomogeneous compound, CS-gas sulfurization, specific heat, magnetic properties

© 2018 Yuqi Chen et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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

Published Online: Feb 01, 2019

Page range: 616 - 622

Received: May 04, 2017

Accepted: Oct 19, 2018

DOI: https://doi.org/10.2478/msp-2018-0097

KeywordsEuS, mixed-valence compound, inhomogeneous compound, CS-gas sulfurization, specific heat, magnetic properties

© 2018 Yuqi Chen et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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

Keywords
EuS, mixed-valence compound, inhomogeneous compound, CS-gas sulfurization, specific heat, magnetic properties