Low-temperature electrical transport properties of disordered Zr100−xSnx alloys

Biswas, Debasish; Meikap, Ajit Kumar; Chattopadhyay, S. K.; Chatterjee, Shreyam

doi:10.1016/j.physb.2006.01.517

Cited by 5 publications

(3 citation statements)

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“…The experimental and theoretical values obtained for m as well as the other parameters given in Table II are of the same order of magnitude as in a variety of disordered systems. [27][28][29][30][31] Here, it is interesting to note that EEI effects dominate the electron transport even at room temperature in Sb-doped films in contrast to expectations. Even if we fit Eq.…”

Section: Resultsmentioning

confidence: 69%

Electron–Electron Interactions in Sb-Doped SnO2 Thin Films

Seri̇n

Yıldız

Serin

et al. 2010

Journal of Elec Materi

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Electrical conductivity and Hall-effect measurements on undoped and Sb-doped SnO 2 thin films prepared by the sol-gel technique were carried out as a function of temperature (55 K to 300 K). Structural characterizations of the films were performed by atomic force microscopy (AFM) and x-ray diffraction (XRD). A doping-induced metal-insulator transition (MIT) was observed. On the metallic side of the transition, the experimental data were interpreted in terms of electron-electron interactions (EEI). The existence of EEI was confirmed by excellent agreement between theoretical and experimental data. The experimental data on the insulator side of the transition were analyzed in terms of variable-range hopping (VRH) conduction. A complete set of parameters describing the properties of the localized electrons, including hopping energy, hopping distance, and the value of the density of states at the Fermi level, was determined.

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Section: Resultsmentioning

confidence: 69%

Electron–Electron Interactions in Sb-Doped SnO2 Thin Films

Seri̇n

Yıldız

Serin

et al. 2010

Journal of Elec Materi

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“…Higher-Order Elastic Constants. The unit cell parameters "a" (basal plane parameter) and "p" (axial ratio) for Zr 100−X Sn X alloys are 3.17Å, 3.23Å, 3.21Å, 3.21Å, and 1.622, 1.599, 1.603, 1.600, respectively, [23]. The values of m and n for chosen materials are 6 and 7.…”

Section: Resultsmentioning

confidence: 99%

Computations of Ultrasonic Parameters in Alloys

Yadawa¹

2011

Physics Research International

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The ultrasonic properties like ultrasonic attenuation, sound velocity in the hexagonal alloys have been studied along unique axis at room temperature. The second- and third-order elastic constants (SOEC & TOEC) have been calculated for these alloys using Lennard-Jones potential. The velocities and have minima and maxima, respectively, at 45° with unique axis of the crystal, while increases with the angle from unique axis. The inconsistent behaviour of angle-dependent velocities is associated to the action of second-order elastic constants. Debye average sound velocities of these alloys are increasing with the angle and has maximum at 55° with unique axis at room temperature. Hence, when a sound wave travels at 55° with unique axis of these alloys, then the average sound velocity is found to be maximum. The mechanical and ultrasonic properties of these alloys will be better than pure Zr and Sn due to their high SOEC and ultrasonic velocity and low ultrasonic attenuation. The comparison of calculated ultrasonic parameters with available theoretical/experimental physical parameters gives information about classification of these alloys.

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“…The coefficients of d and e obtained from fits are À6.61 Â 10 À5 mX À1 mm À1 K À1/2 and 1.04 mX mm/K 1/2 , respectively. According to report [24] the e can be expressed as…”

Section: Resultsmentioning

confidence: 99%