The effect of pressure on the absorption edge in silver halides

Slykhouse, Thomas E.; Drickamer, H. G.

doi:10.1016/0022-3697(58)90262-2

Cited by 57 publications

(14 citation statements)

References 3 publications

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“…3 There are also many experimental works studying various aspects of these solids. [4][5][6][7][10][11][12][13] The results of studies using phenomenological potentials generally show good agreement with experiment. 2 This studies use sophisticated schemes involving three body interactions and van der Waals potentials.…”

supporting

confidence: 60%

Elastic properties and phase stability of AgBr under pressure

Jochym

Parliński

2001

Phys. Rev. B

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Ab initio calculations have been used to derive the elastic constants, equation of state and free energy of NaCl-, KOH-, and CsCl-type structures of AgBr. The elastic constants have been derived by the stress-strain relation. The shear elastic constants $C_{44}$ has proven to be exceptionally soft. We have found that at temperature T=0 the phase transition from the low pressure NaCl-type to the high-pressure CsCl-type structure goes over a monoclinic KOH-type structure. The free energy comparison indicates that the monoclinic phase ranges from 8 to 35 GPa

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supporting

confidence: 60%

Elastic properties and phase stability of AgBr under pressure

Jochym

Parliński

2001

Phys. Rev. B

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“…Although these compounds are investigated both theoretically and experimentally, various structures are reported as ground state due to very similar energetics of different crystallographic phases. Slykhouse and Drickamer [11] proposed a phase transformation from rocksalt (RS) to CsCl-type structure at a pressure of 8.7 GPa for AgCl and 8.3 GPa for AgBr. For the AgI compound, a transition has been reported at a pressure of 9À10 GPa; also, the CsCl and tetragonal structures have been proposed.…”

Section: Introductionmentioning

confidence: 99%

“…For the AgI compound, a transition has been reported at a pressure of 9À10 GPa; also, the CsCl and tetragonal structures have been proposed. [11,2,4,12] Furthermore, an ab initio pseudo potential method has been used to investigate the pressure-induced phase transitions in silver halides. [13] It is found that the rocksalt is the most stable phase for AgCl and AgBr, while a mixture of zinc blende and wurtzite is the most stable phase at ambient conditions for AgI.…”

Section: Introductionmentioning

confidence: 99%

Phase stability and electronic properties of silver halides

et al. 2014

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In this work, we study the phase stability and electronic properties of silver halides ( AgBr, AgCl and AgI) using the full-potential linearized augmented plane wave method within the density functional theory. In this approach, the WuÀCohen generalized gradient approximation was used for the exchangeÀcorrelation potential. Moreover, the modified BeckeÀJohnson approximation was also used for bandstructure calculations. Various structural phase transitions were considered here in order to confirm the most stable structure and to predict the phase transition under hydrostatic pressure. In addition, we have studied the band structures of the stable phases of these compounds which reveal that the three compounds exhibit semiconducting behavior. The results obtained are compared with other calculations and experimental measurements.

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“…However, a phase-transition to the CsCl structure is predicted. The NaCl to CsCl phase transition is very well-known in NaCl [107] and has been found to take place in other alkali halides [108], and also in some silver halides [109,110]. In particular, it has been also experimentally found in other alkaline-earth oxides like CaO at relative low pressure [111].…”

Section: Ax Compoundsmentioning

confidence: 96%

Pressure‐induced structural phase transitions in materials and earth sciences

Manjón

Errandonea

2008

Physica Status Solidi (b)

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Pressure is an important thermodynamic parameter since it allows an increase of matter density by reducing volume. The reduction of volume by applying high pressures leads to an overall decrease of interatomic and intermolecular distances that allows exploring in detail atomic and molecular interactions. Therefore, high‐pressure research has improved our fundamental understanding of these interactions in solids, liquids and gasses. The study of the structure of matter under compression is a rapid developing field that is receiving increasing attention especially due to continuous experimental and theoretical developments. In this article, we give a brief description of the experimental and theoretical methods employed in the study of solid matter at high pressures and summarize the high‐pressure phases of the most relevant elements and inorganic compounds of the AX, A2X, AX2, ABX2, A2X3, ABX3, ABX4 and AB2X4 families giving an overview of the state of the art in high‐pressure research by highlighting recent discoveries, hot spots, controversial questions, and future directions of research. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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The effect of pressure on the absorption edge in silver halides

Cited by 57 publications

References 3 publications

Elastic properties and phase stability of AgBr under pressure

Elastic properties and phase stability of AgBr under pressure

Phase stability and electronic properties of silver halides

Pressure‐induced structural phase transitions in materials and earth sciences

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