Structural, phonon, mechanical, optical, and thermodynamic properties of stable β-La2S3 from first-principles calculations

Zhang, Xian; Gui, Wenhua; Wu, Qian; Zeng, Qingfeng

doi:10.1016/s1002-0721(17)60910-4

Cited by 10 publications

(2 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For La 2 S 3 and other ceric (+3) sesquisulfides, different solid phases, α, β , γ, have been reported 26 . α-La 2 S 3 , with an orthorhombic structure, is stable until 1173 K. β -La 2 S 3 has a stability domain from 1173 K to 1573 K and exhibits a tetragonal structure, similar to the oxysulfide La 10 S 14+x O 1−x .…”

Section: Introductionmentioning

confidence: 99%

Liquid State Properties and Solidification Features of the Pseudo Binary BaS-La2S3

Boury

Allanore

2021

Preprint

View full text Add to dashboard Cite

The high temperature thermodynamic properties of chalcogenides materials based on BaS remain elusive, and herein the La2S3 pseudo binary system is investigated above 1573 K. The liquid properties of BaS-La2S3 are measured by means of high resolution in-situ visualization coupled with thermal arrest measurements in a thermal imaging furnace. This enables to report for the first observation of such melts in a containerless setting. The melting points of BaS and La2S3 are revisited at 2454 K and 2004 K respectively. La2S3 demonstrates a high stability in its liquid state, in strike difference with the sublimation observed for BaS. BaS is however partially stabilized with the addition of few percents of La2S3.The remarkable chemical and thermal stability of La2S3-rich samples, contrasts with the partial decomposition and high vapor pressure observed for BaS-rich samples. Observations and analysis of the solidified samples suggests three different solid solutions. Solid and liquid densities are investigated along the different compositions, supporting a first estimate of the volumetric thermal expansion coefficient for La2S3.

show abstract

Section: Introductionmentioning

confidence: 99%

Liquid State Properties and Solidification Features of the Pseudo Binary BaS-La2S3

Boury

Allanore

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…For La 2 S 3 and other ceric (+ 3) sesquisulfides, different solid phases, , , , have been reported 26 . -La 2 S 3 , with an orthorhombic structure, is stable until 1173 K. -La 2 S 3 has a stability domain from 1173 K to 1573 K and exhibits a tetragonal structure, similar to the oxysulfide .…”

Section: Introductionmentioning

confidence: 99%

Liquid state properties and solidification features of the pseudo binary BaS-La2S3

Boury

Allanore

2021

Sci Rep

View full text Add to dashboard Cite

The high temperature thermodynamic properties of chalcogenides materials based on BaS remain elusive. Herein the pseudo binary BaS-La2S3 is investigated above 1573 K. The liquid properties of BaS-La2S3 are measured by means of high resolution in-situ visualization coupled with thermal arrest measurements in a thermal imaging furnace. This enables to report the first observation of such melts in a container-less setting. The melting points of BaS and La2S3 are revisited at 2454 K and 2004 K respectively. La2S3 demonstrates a high stability in its liquid state, in strike difference with the sublimation observed for BaS. BaS is however partially stabilized with the addition of few percents of La2S3. The remarkable chemical and thermal stability of La2S3-rich samples contrasts with the partial decomposition and high vapor pressure observed for BaS-rich samples. Observations and analysis of the solidified samples suggest three different solid solutions. Solid and liquid densities are investigated along the different compositions, supporting a first estimate of the volumetric thermal expansion coefficient for La2S3.

show abstract

First-principles study of structure, mechanical and optical properties of La- and Sc-doped Y2O3

Zhang

Gao

Gui

et al. 2019

Journal of Rare Earths

View full text Add to dashboard Cite

Structural, phonon, mechanical, optical, and thermodynamic properties of stable β-La2S3 from first-principles calculations

Cited by 10 publications

References 60 publications

Liquid State Properties and Solidification Features of the Pseudo Binary BaS-La2S3

Liquid State Properties and Solidification Features of the Pseudo Binary BaS-La2S3

Liquid state properties and solidification features of the pseudo binary BaS-La2S3

First-principles study of structure, mechanical and optical properties of La- and Sc-doped Y2O3

Contact Info

Product

Resources

About