Effect of elastic properties of nanostructured Ag2S and ZnS sulfides on interface formation

Садовников, С. И.

doi:10.1016/j.mssp.2022.106766

Cited by 4 publications

(2 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Earlier, the formation of Ag 2 S/ZnS heteronanostructures was confirmed in study [ 84 ]. According to [ 84 ], the central portion of heteronanoparticles ~9–10 nm in size is formed by silver sulfide, and the surface of heteronanoparticles is coated with smaller nanoparticles of cubic zinc sulfide ZnS.…”

Section: Ag 2 S/zns Heteronanostructurementioning

confidence: 55%

“…The distributions of the shear modulus G hkl of argentite in the ( hkl ) planes with l = 0.1694, 0.3306, 0.4123, 0.5, 0.6694, or 0.8306 calculated in study [ 84 ] are shown in Figure 23 . The maximum shear modulus G hkl in the (hkl) planes with l = 0.1694, 0.3306, 0.4123, 0.5, 0.6694, or 0.8306 takes in the [±10 l] and [0±1 l] directions, and the minimum shear modulus G hkl of β -Ag 2 S argentite is observed in four equivalent directions [±1±1 l].…”

Section: Ag 2 S/zns Heteronanostructurementioning

confidence: 99%

See 1 more Smart Citation

Polymorphic Phase Transformations in Nanocrystalline Ag2S Silver Sulfide in a Wide Temperature Interval and Influence of Nanostructured Ag2S on the Interface Formation in Ag2S/ZnS Heteronanostructure

2022

Self Cite

View full text Add to dashboard Cite

Phase transformations that take place in nanocrystalline Ag2S silver sulfide have been systematically studied at temperatures from 298 to 893 K. The crystal structures of the polymorphic modifications α-Ag2S, β-Ag2S, and γ-Ag2S of nanocrystalline Ag2S have been found. It is established that the interstitial spacings between ions of silver in the superionic phases β-Ag2S and γ-Ag2S are noticeably smaller than diameter of the Ag+ ion. As a result of which, the probabilities of filling the sites of the metal sublattices of these phases with Ag atoms are very small. It was found that the “α-Ag2S—β-Ag2S” and “β-Ag2S—γ-Ag2S” transitions between polymorphic modifications of silver sulfide occur as phase transformations of the first order at temperatures of ~440–442 K and ~850–860 K. The structure of interface forming by nanostructured Ag2S and ZnS is considered, taking into account the anisotropy of elastic properties of these sulfides. It is established that a large amount of cubic zinc sulfide stabilizes the cubic structure of β-Ag2S argentite at 300 K during the co-deposition of Ag2S/ZnS heteronanostructures from colloid solutions. It is found that placing Ag atoms at four crystallographic positions located in one plane of the unit cell of cubic β-Ag2S argentite is most favorable for the appearance of Ag2S/ZnS heterostructures. The smallest strain distortions at the interface are observed at the minimum difference of shear moduli of the components forming heteronanostructure. The distributions of elastic characteristics, including the shear moduli of monocrystalline particles of cubic β-Ag2S argentite and ZnS sphalerite from the [hkl] direction, are found. The formation of Ag2S/ZnS heteronanostructures, in which the interface is formed by the (hk0) ≡ (110) plane of ZnS sphalerite and the (hk 0.4123) ≡ (1 1 0.4123) plane of β-Ag2S argentite, is the most energetically favorable.

show abstract

Section: Ag 2 S/zns Heteronanostructurementioning

confidence: 55%

Section: Ag 2 S/zns Heteronanostructurementioning

confidence: 99%