Journal ArticleDOI
Crystal Growth and Galvanomagnetic Properties of Mg2Pb
G. A. Stringer,R. J. Higgins +1 more
TLDR
In this article, a method for growing single-crystal Mg2Pb ingots using a Bridgman method is described. But the method is not congruently melting but forms from a peritectic reaction.Abstract:
A method for growing single‐crystal Mg2Pb is described. A Bridgman method is used, starting with a nonstoichiometric melt (<31.3 at.% Pb). This requirement follows from the recent discovery that Mg2Pb is not congruently melting but forms from a peritectic reaction. The usefulness of an x‐ray microprobe for the analysis of crystal growing problems is demonstrated by a study of eutectic inclusions observed in some Mg2Pb ingots. Measurements are reported of the angular dependence of the magnetoresistance and the magnetic field dependence of the Hall coefficient in fields up to 5200 G and at temperatures of 4.2° and 77°K. The phenomenological coefficients, b, c, and d, determined from the angular dependence of the magnetoresistance show strong field dependence at 4.2°K and obey the symmetry condition for [100] oriented many valley ellipsoids at all fields and temperatures. The Hall coefficient exhibits a strong field dependence, similar to p‐type Ge, which has been fitted by a simple model consisting of two s...read more
Citations
More filters
Journal ArticleDOI
Thermal conductivity of Mg2Si, Mg2Ge and Mg2Sn
TL;DR: In this paper, the thermal conductivities of the n-type semiconductors Mg 2 Si and mg 2 Ge have been measured from liquid helium temperature to room temperature.
Book ChapterDOI
Electronic Structure of Metallic Compounds and Alloys: Experimental Aspects
TL;DR: A review on the experimental methods for obtaining quantitative information directly relatable to the electronic structure of metallic compounds and disordered alloys, and a comparison on the results with theoretical results when the latter are available is presented in this article.
Journal ArticleDOI
Temperature dependent elastic coefficients of Mg2X (X = Si, Ge, Sn, Pb) compounds from first-principles calculations
TL;DR: In this article, the influence of temperature on the elastic properties of antifluorite compounds was studied using first-principles calculations, within the generalized gradient approximation, and compared with the available experimental data in the literature.
Journal ArticleDOI
Thermoelectric performance enhancement of Mg2Sn based solid solutions by band convergence and phonon scattering via Pb and Si/Ge substitution for Sn
Jun Mao,Jun Mao,Yumei Wang,Yumei Wang,Binghui Ge,Qing Jie,Zihang Liu,Zihang Liu,Udara Saparamadu,Weishu Liu,Zhifeng Ren +10 more
TL;DR: In this study, the thermoelectric properties of Mg2Sn0.98-xPbxSb0.02 were studied and reduced the lattice thermal conductivity significantly due to enhanced phonon scattering by point defects as well as nanoparticles, and bipolar thermal conductivities were suppressed.
Journal ArticleDOI
First principles study of Mg2X (X=Si, Ge, Sn, Pb): Elastic, optoelectronic and thermoelectric properties
Ghulam Murtaza,A. Sajid,M. Rizwan,Yoshiki Takagiwa,Houari Khachai,M. Jibran,Rabah Khenata,S. Bin Omran +7 more
TL;DR: In this paper, the structural, elastic, electronic, thermoelectric and optical properties of Mg2X (X=Si, Ge, Sn, Pb) compounds were calculated using the full potential linearized augmented plane wave method within the framework of density functional theory.
References
More filters
Journal ArticleDOI
Note on the Theory of Resistance of a Cubic Semiconductor in a Magnetic Field
TL;DR: In this article, the theory of the behavior of a classical electron gas in combined electric and magnetic fields, developed by Gans and extended by Sommerfeld and Davis, is applied to a system possessing cubic symmetry.
Journal ArticleDOI
The Magneto-Resistance Effect in Oriented Single Crystals of Germanium
G. L. Pearson,H. Suhl +1 more
TL;DR: The magneto-resistance effect in germanium as a function of crystal orientation has been studied in this paper, and the results are internally consistent with existing phenomenological theory based on cubic crystal symmetry, in which terms involving the magnetic field to higher than second order are neglected.