A new thermodynamic description of the binary Bi-Te system using the associate solution and the Wagner-Schottky models

Gierlotka, Wojciech

doi:10.1016/j.calphad.2018.08.005

Cited by 12 publications

(3 citation statements)

References 26 publications

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“…The enthalpy of formation is lower for Bi 2 Te 3 than for Bi 4 Te 3 . [48] indicates that there may be a strong driving force for diffusion of Te from FTS to Bi 4 Te 3 relative to Bi 2 Te 3 , which is consistent with the observations that Te migrates across this interface. This indicates that the FTS at the interface is likely highly reduced, yet remains intact structurally.…”

Section: Discussionsupporting

confidence: 87%

Interfacially Enhanced Superconductivity in Fe(Te,Se)/Bi₄Te₃ Heterostructures

Chen,

Lu,

Hershkovitz

et al. 2024

Advanced Materials

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Realizing topological superconductivity by integrating high‐transition‐temperature (TC) superconductors with topological insulators can open new paths for quantum computing applications. Here, we report a new approach for increasing the superconducting transition temperature by interfacing the unconventional superconductor Fe(Te,Se) with the topological insulator Bi‐Te system in the low‐Se doping regime, near where superconductivity vanishes in the bulk. The critical finding is that the of Fe(Te,Se) increases from nominally non‐superconducting to as high as 12.5 K when Bi2Te3 is replaced with the topological phase Bi4Te3. Interfacing Fe(Te,Se) with Bi4Te3 is also found to be critical for stabilizing superconductivity in monolayer films where can be as high as 6 K. Measurements of the electronic and crystalline structure of the Bi4Te3 layer reveal that a large electron transfer, epitaxial strain, and novel chemical reduction processes are critical factors for the enhancement of superconductivity. This novel route for enhancing TC in an important epitaxial system provides new insight on the nature of interfacial superconductivity and a platform to identify and utilize new electronic phases.This article is protected by copyright. All rights reserved

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Section: Discussionsupporting

confidence: 87%

Interfacially Enhanced Superconductivity in Fe(Te,Se)/Bi₄Te₃ Heterostructures

Chen,

Lu,

Hershkovitz

et al. 2024

Advanced Materials

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“…Various versions of the T-x diagram given in [19][20][21][22][23] are contradictory. Even the results of recent studies [24,25] do not agree on the character of the crystal structure and the homogeneity regions of the intermediate phases formed in it.…”

Section: Introductionmentioning

confidence: 82%

THERMODYNAMİC PROPERTİES OF THE Bi2Te3 AND Bi4Te5 COMPOUNDS

Hasanova¹,

Dashdiyeva²,

Yusibov³

et al. 2020

Chemical Problems

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The thermodynamic properties of the BiTe system were studied in the 55-65 at% Te compositions interval and temperatures 300-450 K by using the electromotive forces method. Relative partial molar functions of bismuth in the alloys were calculated. Based on the potential-forming reactions for Bi 2 Te 3 and Bi 4 Te 5 compounds, a mutually consistent set of standard thermodynamic functions and standard entropies is obtained. A comparative analysis of the data obtained for Bi 2 Te 3 with literature is performed, for Bi 4 Te 5 thermodynamic functions were obtained for the first time.

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“…The compilation phase diagram [26] shows the compositions of all known bismuth tellurides without specifying their temperatures and melting character. In works [27,28], carried out recently, the results of modeling and thermodynamic analysis of the phase diagram of the Bi-Te system, in particular, by the CALPHAD method, are presented. However, in these studies, compounds of the homologous series nBi2•mBi2Тe3 are not considered as individual compounds.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamıc Propertıes of the BiTe and Bi8Te9 Compounds

Hasanova

Aghazade

Yusibov

et al. 2020

Phys. Chem. Solid St.

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Two-phase alloys Bi8Te9+Bi4Te5 and BiTe+Bi8Te9 were studied by the electromotive forces method (EMF) in the temperature range 300-450 K. From the EMF data, the relative partial molar functions of bismuth in the alloys were calculated. The potential-forming reactions responsible for these partial functions were compiled, the values of the standard thermodynamic functions of formation, and the standard entropies of Bi8Te9 and BiTe compounds were calculated. A comparative analysis of the data for BiTe with the literature data was carried out; for Bi8Te9, the thermodynamic functions were obtained for the first time.

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A new thermodynamic description of the binary Bi-Te system using the associate solution and the Wagner-Schottky models

Cited by 12 publications

References 26 publications

Interfacially Enhanced Superconductivity in Fe(Te,Se)/Bi₄Te₃ Heterostructures

Interfacially Enhanced Superconductivity in Fe(Te,Se)/Bi₄Te₃ Heterostructures

THERMODYNAMİC PROPERTİES OF THE Bi2Te3 AND Bi4Te5 COMPOUNDS

Thermodynamıc Propertıes of the BiTe and Bi8Te9 Compounds

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A new thermodynamic description of the binary Bi-Te system using the associate solution and the Wagner-Schottky models

Cited by 12 publications

References 26 publications

Interfacially Enhanced Superconductivity in Fe(Te,Se)/Bi4Te3 Heterostructures

Interfacially Enhanced Superconductivity in Fe(Te,Se)/Bi4Te3 Heterostructures

THERMODYNAMİC PROPERTİES OF THE Bi2Te3 AND Bi4Te5 COMPOUNDS

Thermodynamıc Propertıes of the BiTe and Bi8Te9 Compounds

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Interfacially Enhanced Superconductivity in Fe(Te,Se)/Bi₄Te₃ Heterostructures

Interfacially Enhanced Superconductivity in Fe(Te,Se)/Bi₄Te₃ Heterostructures