Solid State Physics

Dekker, A. J.

doi:10.1007/978-1-349-00784-4

Cited by 112 publications

(127 citation statements)

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“…The theory of electrical resistivity of metals and alloys has been the subject of a number of reviews and has constituted a large portion of the material in several books [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: 4 Imentioning

confidence: 99%

Electrical Resistivity of Ten Selected Binary Alloy Systems

Ackerman

et al. 1983

Journal of Physical and Chemical Reference Data

225

113

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This work compiles, reviews, and discusses the available data and information on the electrical resistivity of ten selected binary alloy systems and presents the recommended values resulting from critical evaluation, correlation, analysis, and synthesis of the available data and information. The ten binary alloy systems selected are the systems of aluminum–copper, aluminum–magnesium, copper–gold, copper–nickel, copper–palladium, copper–zinc, gold–palladium, gold–silver, iron–nickel, and silver–palladium. The recommended values for each of the ten binary alloy systems except three (aluminum–copper, aluminum–magnesium, and copper–zinc) are given for 27 compositions: 0 (pure element), 0.5, 1, 3, 5, 10(5)95, 97, 99, 99.5, and 100% (pure element). For aluminum–copper, aluminum–magnesium, and copper–zinc alloy systems, the recommended values are given for 26, 12, and 11 compositions, respectively. For most of the alloy systems the recommended values cover the temperature range from 1 K to the solidus temperature of the alloys or to about 1200 K. For most of the nine elements constituting the alloy systems, the recommended values cover the temperature range from 1 K to above the melting point into the molten state. The estimated uncertainties in most of the recommended values are about ±3% to ±5%. Key words: alloy systems; alloys; conductivity; critically evaluated data; data analysis; data compilation; data synthesis; electrical conductivity; electrical resistivity; metals; recommended values; resistivity.

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Section: 4 Imentioning

confidence: 99%

Electrical Resistivity of Ten Selected Binary Alloy Systems

Ackerman

et al. 1983

Journal of Physical and Chemical Reference Data

225

113

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“…Since the invocation of the concept of apparently characteristic, material-specific temperature parameters, Θ, within Debye's classical paper [1] on specific heats of solids, one was concerned with a large variety of quotations of corresponding Θ values (so-called "Debye temperatures") within numerous thermophysical research papers, including various representative review articles [2][3][4][5] and books [6][7][8][9][10]. A brief inspection of the enormous Θ data material published hitherto, however, showed readily that it is obviously not possible to find unique Θ values for the individual materials in question, which should apply to duly broad temperature regions.…”

Section: Introductionmentioning

confidence: 99%

“…In the course of numerical fittings of measured (isobaric) heat capacities, ( ), on the basis of (1), it has continually been found that, in contrast with Debye's original suggestion [1], proper simulations of such heat capacity curves can in fact be realized only by admitting rather strong -dependencies of the material-specific Debye temperatures, Θ ( ). This statement applies above all to the liquid-helium-hydrogen 2 Advances in Condensed Matter Physics region, where the adjusted Θ ( ) values are as a rule rapidly falling [3][4][5][12][13][14][15][16][17] from their → 0 limiting levels, Θ (0), to certain minimum values, Θ min , which used to be located in the vicinities of ≈ Θ (0)/15. Furthermore, towards higher temperatures, many Θ ( ) curves show a more or less pronounced increase up to certain material-specific maxima, Θ max , the actual magnitudes of which are in many cases significantly higher than the respective Θ min levels.…”

Section: Introductionmentioning

confidence: 99%

Unprecedented Integral-Free Debye Temperature Formulas: Sample Applications to Heat Capacities of ZnSe and ZnTe

Pässler

2017

Advances in Condensed Matter Physics

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Detailed analytical and numerical analyses are performed for combinations of several complementary sets of measured heat capacities, for ZnSe and ZnTe, from the liquid-helium region up to 600 K. The isochoric (harmonic) parts of heat capacities, ℎ ( ), are described within the frame of a properly devised four-oscillator hybrid model. Additional anharmonicity-related terms are included for comprehensive numerical fittings of the isobaric heat capacities, ( ). The contributions of Debye and nonDebye type due to the low-energy acoustical phonon sections are represented here for the first time by unprecedented, integralfree formulas. Indications for weak electronic contributions to the cryogenic heat capacities are found for both materials. A novel analytical framework has been constructed for high-accuracy evaluations of Debye function integrals via a couple of integralfree formulas, consisting of Debye's conventional low-temperature series expansion in combination with an unprecedented hightemperature series representation for reciprocal values of the Debye function. The zero-temperature limits of Debye temperatures have been detected from published low-temperature ( ) data sets to be significantly lower than previously estimated, namely, 270 (±3) K for ZnSe and 220 (±2) K for ZnTe. The high-temperature limits of the "true" (harmonic lattice) Debye temperatures are found to be 317 K for ZnSe and 262 K for ZnTe.

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“…Assuming that for an uniaxial ferroelectric the free energy of unpolarized crystals is equal to zero [32][33][34] , the free energy, G, of polarized crystals could be written as:…”

Section: Theory Of Ferroelectricitymentioning

confidence: 99%

A facile method to enhance ferroelectric properties in PVDF nanocomposites

et al. 2015

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Poly(vinylidene fluoride) (PVDF)/nanoclay composites were prepared using melt compounding. The effect of acrylic rubber (ACM) as a compatibilizer on different polymorph formation and on the ferroelectric properties of nanocomposites were investigated. The intercalation and morphological structure of the samples were studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The infrared spectroscopy and X-ray analysis revealed the coexistence of beta and gamma crystalline forms in PVDF-clay nanocomposite, while in partially miscible PVDF/ACM/clay hybrids, three polymorphs of alpha, beta and g coexisted. The coefficients of electric field-polarization (E-P) Taylor expansion were calculated based on the Lorentz theory. Using a genetic algorithm, complex dielectric susceptibilities as well as the dielectric constants for each sample were calculated and optimized. The predicted dielectric constants were found to be in good agreement with the experimental results. A dielectric constant of 16 (10 Hz) was obtained for PVDF/ACM/ clay (90/10/5), which was 40% higher than that of the PVDF-clay (100/5) nanocomposite without ACM. The improved dielectric performance of the nanocomposites can be attributed to the compatibilizing effect of ACM, which facilitated the growth of b polymorph in the sample. Poly(vinylidene fluoride) (PVDF)/nanoclay composites were prepared using melt compounding. Effect of acrylic rubber(ACM) as a compatibilizer on different polymorph formation and ferroelectric properties of nanocomposites were investigated. Intercalation and morphological structure of the samples were studied using X-ray diffraction (XRD) and transition electron microscopy (TEM). Infrared spectroscopy and X-ray analysis revealed the coexistence of β and γ crystalline forms in PVDF/Clay nanocomposite while in partially miscible PVDF/ACM/Clay hybrids three polymorphs of α, β and γ coexisted. Inclusion of ACM found to improve the ferroelectric properties of PVDF/Clay nanocomposites which is mainly due to the growth of β polymorph in the sample. Coefficients of Electric field-Polarization (E-P) Taylor expansion were calculated based on free energy function according to Landau-Devonshire theory. Using genetic algorithm, complex dielectric susceptibilities as well as dielectric constant for each sample were calculated and optimized. Predicted electric displacement was found to be in quite good agreement with experimental results.

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Solid State Physics

Cited by 112 publications

References 0 publications

Electrical Resistivity of Ten Selected Binary Alloy Systems

Electrical Resistivity of Ten Selected Binary Alloy Systems

Unprecedented Integral-Free Debye Temperature Formulas: Sample Applications to Heat Capacities of ZnSe and ZnTe

A facile method to enhance ferroelectric properties in PVDF nanocomposites

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