The Ti-doped Bi 2 Te 3 with concentrations 1, 3, and 5 in % Ti were synthesized using a simple powder metallurgy method. It is revealed that the optimum Ti addition in parent material changes the conduction type from undoped n-type into p-type with 1...…
In 1821, T.J. Seebeck discovered the Seebeck effect when he noticed that a compass needle was deflected when a metal was heated with a heat gradient. He called the effect thermomagnetism. Oersted later redefined it when he observed that an electric c...…
Eighteen years before anyone understood what an electron was or that they existed, back when the current was thought to be an incompressible fluid, Edwin Hall, while working on his dissertation, discovered that when applying a current along a thin go...…
An experimental investigation of the electronic transport properties of bismuth telluride nanocomposite materials is presented. The primary transport measurements are electrical conductivity, the Seebeck coefficient, and the Hall effect. An experimen...…
Bismuth telluride (Bi2Te3) is a gray or black hexagonal platelet with a metallic luster or gray powder. It is an alloy of two metallic elements (Bismuth and tellurium), also known as Bismuth (III) telluride. When alloyed with antimony or selenium, it...…
What is Bismuth telluride?Bismuth telluride (Bi2Te3) is a gray or black hexagonal platelet with a metallic luster or gray powder. It is an alloy of two metallic elements (bismuth and tellurium), also known as bismuth(III) telluride. When alloyed with...…
The electronic transport properties vary significantly with alloy composition. Pisarenko plot fits of Seebeck versus Hall carrier concentration using a single valley effective mass model assuming potential deformation scattering find that the Seebeck...…
Bismuth telluride, bismuth selenide, and all intermediate alloys Bi2Te3−xSex have the tetradymite crystal structure in the symmetry group R3¯m. The material is comprised of repeating quintuple layers of X(1)–Bi–X(2)–Bi–X(1), where the number in paren...…
The n-type Bi2Te3-Bi2Se3 alloy is less straightforward. Mass contrast alloy scattering modeling does not match thermal conductivity values reported in the literature, and there is wide variability in qualitative trends reported. The electronic band s...…
Bismuth telluride is the dominant thermoelectric material for applications near room temperature due to its inherently low lattice thermal conductivity and high electronic weighted mobility. Its performance is ultimately limited by the harmful effect...…
Bismuth telluride is the working material for most Peltier cooling devices and thermoelectric generators. Bi2Te3 (or, more precisely, its alloys with Sb2Te3 for p-type and Bi2Se3 for n-type material) has the highest thermoelectric figure of merit, zT...…
What is Bismuth Telluride?Bismuth Telluride is a narrow gap-layered semiconductor with high thermal conductivity. Recent research has confirmed that bismuth telluride may significantly increase the speed of microchips and be the basis for the emergin...…
We synthesized the Ti3AlC2 MAX phase by a ceramic synthesis route and confirmed its structure by X-ray diffraction (see the Supporting Information for full experimental details). It consists of a c-axis stacking sequence where two layers of edge-shar...…
What is the application of stearic acid in cosmetics?…
Boron has the largest volume of heat, second only to beryllium by weight. Slightly soluble in nitric acid, insoluble in water.Amorphous boron is chemically active. Powder and air can form an explosive mixture. Reduction of boron anhydride b…
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