Elastic and thermodynamic properties of AVO3 (A=Sr, Pb) perovskites

Parveen, Atahar

doi:10.1016/j.physb.2011.11.023

Cited by 12 publications

(10 citation statements)

References 27 publications

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“…Using the Poisson ratios LVO and SVO as fitting parameters, an epitaxial mismatch corrected dependence of the out-ofplane film lattice parameter was obtained for stoichiometric La 1-x Sr x VO 3 films shown as blue solid line in Fig. 4, which yielded LVO ¼ 0.398 and SVO ¼ 0.214; 23,29,[37][38][39] the Poisson ratio for SrVO 3 matched previously reported values, 23,29 while the value of 0.398 for LaVO 3 was within physically reasonable values. The out-of-plane film lattice parameter therefore provides a means to obtain the composition x of stoichiometric La 1-x Sr x VO 3 films without the need for RBS measurements provided the growth window can be confirmed by RHEED.…”

Section: -3supporting

confidence: 66%

Mapping growth windows in quaternary perovskite oxide systems by hybrid molecular beam epitaxy

Brahlek

Zhang

et al. 2016

Applied Physics Letters

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Requisite to growing stoichiometric perovskite thin films of the solid-solution A′1-xAxBO3 by hybrid molecular beam epitaxy is understanding how the growth conditions interpolate between the end members A'BO3 and ABO3, which can be grown in a self-regulated fashion, but under different conditions. Using the example of La1-xSrxVO3, the two-dimensional growth parameter space that is spanned by the flux of the metal-organic precursor vanadium oxytriisopropoxide and composition, x, was mapped out. The evolution of the adsorption-controlled growth window was obtained using a combination of X-ray diffraction, atomic force microscopy, reflection high-energy electron-diffraction (RHEED), and Rutherford backscattering spectroscopy. It is found that the stoichiometric growth conditions can be mapped out quickly with a single calibration sample using RHEED. Once stoichiometric conditions have been identified, the out-of-plane lattice parameter can be utilized to precisely determine the composition x. This strategy enables the identification of growth conditions that allow the deposition of stoichiometric perovskite oxide films with random A-site cation mixing, which is relevant to a large number of perovskite materials with interesting properties, e.g., high-temperature superconductivity and colossal magnetoresistance, that emerge in solid solution A′1-xAxBO3.

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Section: -3supporting

confidence: 66%

Mapping growth windows in quaternary perovskite oxide systems by hybrid molecular beam epitaxy

Brahlek

Zhang

et al. 2016

Applied Physics Letters

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“…Mechanical properties explain the possible micro-cracks in a compound during the growth process and suggest its suitability for industrial applications. 40 Three elastic constants: C 11 , C 12 and C 44 are used to evaluate the elastic properties of cubic materials 41 and are given by the following relations. 42 C 11 = 4:133TαB T + e 2 4r 4…”

Section: Elastic and Mechanical Resultsmentioning

confidence: 99%

“…Mechanical properties explain the possible micro‐cracks in a compound during the growth process and suggest its suitability for industrial applications 40 . Three elastic constants: C 11 , C 12 and C 44 are used to evaluate the elastic properties of cubic materials 41 and are given by the following relations 42

C_{11} = 4.133 italicTα B_{T} + \frac{e^{2}}{4 r^{4}} ([], \frac{true}{A_{1}} - 1.733 B_{1} + \frac{true}{A_{2}} - 2.0666 B_{2})

C_{12} = 3.066 italicTα B_{T} + \frac{e^{2}}{4 r^{4}} ([], \frac{true}{A_{1}} - 1.3666 B_{1} + \frac{true}{A_{2}} - 1.5333 B_{2})

C_{44} = - 2.0666 italicTα B_{T} + \frac{e^{2}}{4 r^{4}} ([], \frac{true}{A_{1}} - 1.3666 B_{1} + \frac{true}{A_{2}} - 1.5333 B_{2})

where,

italicTα B_{T} = \frac{e^{2}}{4 r^{4}} ([], 0.3392 ε^{2} + B_{1} - B_{2})

…”

Section: Resultsmentioning

confidence: 99%

Pressure‐dependent elasto‐mechanical stability and thermoelectric properties of MYbF ₃ (M = Rb, Cs) materials for renewable energy

et al. 2021

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“…Motivated by the unusual thermodynamic behavior and spin dynamics of RVO 3 , we have recently applied modified rigid ion model (MRIM) and successfully explored the elastic and thermodynamic properties of the orthovanadates RVO 3 (R = La, Ce, Pr, Nd, Sm, Eu) and AVO 3 (A = Sr, Pb). [12][13][14] The study of the lattice thermal properties of these compounds may be taken as starting point for the consistent understanding of the more complex physical properties of the rare earth orthovanadates LuVO 3 and ScVO 3 . The essentials of the MRIM formalism and the results obtained from its application are discussed in Sec.…”

Section: Introductionmentioning

confidence: 99%

THE ELASTIC AND THERMODYNAMIC PROPERTIES OF Lu DOPED ScVO₃

Parveen

2012

Int. J. Mod. Phys. B

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We have investigated the elastic, cohesive and thermal properties of (Lu, Sc) VO 3 and Sc 1−x LuxVO 3 (0.6 ≤ x ≤ 0.9) perovskites by means of a modified rigid ion model (MRIM). The variation of specific heat is determined following the temperature driven structural phase transitions. Also, the effect of lattice distortions on the elastic and thermal properties of the present pure and doped vanadates has been studied by an atomistic approach. The calculated bulk modulus (B T ), reststrahlen frequency (ν 0 ), cohesive energy (φ), Debye temperature (θ D ) and Gruneisen parameter (γ) reproduce well with the corresponding experimental data. The specific heat results can further be improved by including the magnetic ordering contributions to the specific heat. Int. J. Mod. Phys. B 2012.26. Downloaded from www.worldscientific.com by MCGILL UNIVERSITY on 02/03/15. For personal use only. 1250190-2 Int. J. Mod. Phys. B 2012.26. Downloaded from www.worldscientific.com by MCGILL UNIVERSITY on 02/03/15. For personal use only.

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Elastic and thermodynamic properties of AVO3 (A=Sr, Pb) perovskites

Cited by 12 publications

References 27 publications

Mapping growth windows in quaternary perovskite oxide systems by hybrid molecular beam epitaxy

Mapping growth windows in quaternary perovskite oxide systems by hybrid molecular beam epitaxy

Pressure‐dependent elasto‐mechanical stability and thermoelectric properties of MYbF ₃ (M = Rb, Cs) materials for renewable energy

THE ELASTIC AND THERMODYNAMIC PROPERTIES OF Lu DOPED ScVO₃

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Elastic and thermodynamic properties of AVO3 (A=Sr, Pb) perovskites

Cited by 12 publications

References 27 publications

Mapping growth windows in quaternary perovskite oxide systems by hybrid molecular beam epitaxy

Mapping growth windows in quaternary perovskite oxide systems by hybrid molecular beam epitaxy

Pressure‐dependent elasto‐mechanical stability and thermoelectric properties of MYbF 3 (M = Rb, Cs) materials for renewable energy

THE ELASTIC AND THERMODYNAMIC PROPERTIES OF Lu DOPED ScVO3

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Pressure‐dependent elasto‐mechanical stability and thermoelectric properties of MYbF ₃ (M = Rb, Cs) materials for renewable energy

THE ELASTIC AND THERMODYNAMIC PROPERTIES OF Lu DOPED ScVO₃