Thermal transport properties of antimonene: an ab initio study

2016 ◽  
Vol 18 (45) ◽  
pp. 31217-31222 ◽  
Author(s):  
Shudong Wang ◽  
Wenhua Wang ◽  
Guojun Zhao
Keyword(s):  
Thermal Conductivity ◽  
Ab Initio ◽  
Transport Properties ◽  
Thermal Transport ◽  
Ab Initio Study ◽  
Thermoelectric Devices ◽  
Low Thermal Conductivity ◽  
Thermal Transport Properties

Searching for low thermal conductivity materials is crucial for thermoelectric devices.

Electrical and thermal transport properties of Fe–Ni based ternary alloys in the earth's inner core: An ab initio study

2020 ◽  
Vol 301 ◽  
pp. 106465
Author(s):  
Mustapha Zidane ◽  
El Mehdi Salmani ◽  
Arnab Majumdar ◽  
Hamid Ez-Zahraouy ◽  
Abdelilah Benyoussef ◽  
...  
Keyword(s):  
Ab Initio ◽  
Transport Properties ◽  
Thermal Transport ◽  
Inner Core ◽  
Ternary Alloys ◽  
Ab Initio Study ◽  
Thermal Transport Properties ◽  
Earth’S Inner Core

Investigation of i-AlCuFe Quasicrystals and their ω and β Approximants as Thermoelectric Materials

2001 ◽  
Vol 691 ◽  
Author(s):  
P. N. Alboni ◽  
A. L. Pope ◽  
T. M. Tritt ◽  
A. R. Ross ◽  
C. Jenks ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Transport Properties ◽  
Thermoelectric Materials ◽  
Thermal Transport ◽  
Quasicrystalline Phase ◽  
Crystalline Phases ◽  
Low Thermal Conductivity ◽  
Thermal Transport Properties

ABSTRACTIn the search for new thermoelectric materials, quasicrystals have been investigated due to their inherently low thermal conductivity. Crystalline phases called approximants which are closely related to the quasicrystals, however, have largely been ignored. These approximants have similar structure, yet the periodicity of a crystal. In this paper, we have investigated an icosahedral i-AlCuFe quasicrystalline phase as well as two of its corresponding approximant phases (ω and β). Electrical and thermal transport properties of these materials are presented. The viability of the i-AlCuFe quasicrystalline system and the ω and β approximant phases as thermoelectric materials is discussed.

scholarly journals Study of anisotropic thermal conductivity in textured thermoelectric alloys by Raman spectroscopy

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 24456-24465
Author(s):  
Rapaka S. C. Bose ◽  
K. Ramesh
Keyword(s):  
Crystal Structure ◽  
Thermal Conductivity ◽  
Raman Spectroscopy ◽  
Transport Properties ◽  
Thermal Transport ◽  
Layered Crystal ◽  
Layered Crystal Structure ◽  
Thermal Transport Properties ◽  
Anisotropic Thermal Conductivity ◽  
P Type

Polycrystalline p-type Sb1.5Bi0.5Te3 (SBT) and n-type Bi2Te2.7Se0.3 (BTS) compounds possessing layered crystal structure show anisotropic electronic and thermal transport properties.

Thermal transport properties of monolayer MoSe2 with defects

2020 ◽  
Vol 22 (10) ◽  
pp. 5832-5838 ◽  
Author(s):  
Jiang-Jiang Ma ◽  
Jing-Jing Zheng ◽  
Wei-Dong Li ◽  
Dong-Hong Wang ◽  
Bao-Tian Wang
Keyword(s):  
Thermal Conductivity ◽  
Transport Properties ◽  
Thermal Transport ◽  
Lattice Thermal Conductivity ◽  
Thermal Transport Properties

The defects in monolayer MoSe2 have a significant effect on its lattice thermal conductivity.

scholarly journals Reduction of Lattice Thermal Conductivity in PbTe Induced by Artificially Generated Pores

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Jae-Yeol Hwang ◽  
Eun Sung Kim ◽  
Syed Waqar Hasan ◽  
Soon-Mok Choi ◽  
Kyu Hyoung Lee ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Pore Structure ◽  
Transport Properties ◽  
Thermoelectric Materials ◽  
Thermal Transport ◽  
Lattice Thermal Conductivity ◽  
Phonon Scattering ◽  
Phonon Modes ◽  
Thermal Transport Properties

Highly dense pore structure was generated by simple sequential routes using NaCl and PVA as porogens in conventional PbTe thermoelectric materials, and the effect of pores on thermal transport properties was investigated. Compared with the pristine PbTe, the lattice thermal conductivity values of pore-generated PbTe polycrystalline bulks were significantly reduced due to the enhanced phonon scattering by mismatched phonon modes in the presence of pores (200 nm–2 μm) in the PbTe matrix. We obtained extremely low lattice thermal conductivity (~0.56 W m−1 K−1at 773 K) in pore-embedded PbTe bulk after sonication for the elimination of NaCl residue.

Annealing Studies of Re Doped AlPdMn Quasicrystals

2001 ◽  
Vol 691 ◽  
Author(s):  
Donny W. Winkler ◽  
Terry M. Tritt ◽  
Robert Gagnon ◽  
J. Strom-Olsen
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
Transport Properties ◽  
Thermal Transport ◽  
Amorphous Materials ◽  
Annealed Sample ◽  
Annealing Conditions ◽  
Thermal Transport Properties ◽  
The Relationship

ABSTRACTQuasicrystals have properties associated with both crystalline and amorphous materials. These properties appear to be sensitive to both composition and annealing conditions. Therefore, it is important to investigate the influence of the microstructure on the electrical and thermal transport properties of quasicrystals. AlPdMn quasicrystal samples were prepared with various levels of Re substituted for the Mn (Al70Pd20Mn10−XReX) and then subjected to different annealing conditions. Electrical resistivity, thermopower and thermal conductivity were measured on each as grown and annealed sample over a broad range of temperature, 10 K < T < 300 K. The relationship between the electrical and thermal transport properties and microstructure will be presented and discussed.

Evidence of a Order-Disorder Transition in the Crystalline Phase of Cd6Yb, 1/1 cubic approximant of icosahedral Cd 5.7 Yb

2003 ◽  
Vol 793 ◽  
Author(s):  
N. Sorloaica ◽  
A. L. Pope ◽  
D. W. Winkler ◽  
Terry M. Tritt ◽  
V. Keppens ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Temperature Dependence ◽  
Transport Properties ◽  
Crystalline Phase ◽  
Thermal Transport ◽  
Hysteretic Behavior ◽  
Disorder Transition ◽  
Temperature Range ◽  
Thermal Transport Properties

ABSTRACTThe electrical and thermal transport properties (electrical resistivity, thermopower, heat capacity and thermal conductivity) of the crystalline phase of the binary Cd6Yb system has been measured over a temperature range from 10 K to 300 K. Evidence for a phase transition in Cd6Yb is observed in the electrical transport properties with distinct changes in the temperature dependence of the resistivity and thermopower around T ≈ 110K. An anomaly in the heat capacity and a thermal conductivity is also observed at this same temperature. Hysteretic behavior is not evident in the temperature dependence of any of the electrical and thermal transport properties. In addition, the elastic properties using resonant ultrasound (RUS) techniques have been investigated over a similar temperature range. A large “resonance dip” is observed in the RUS data at T ≈ 110K, which is indicative of some type of structural change in the crystalline material at this temperature. These data will be presented and discussed in context of the undergoes reversible order-disorder transition in the 1/1 cubic approximant at about 110 K, which makes the system very interesting compared to the quasicrystal phase Cd5.7Yb

Thermal Transport Properties of Various Thin Films for MEMS Applications

2006 ◽  
Vol 326-328 ◽  
pp. 293-296
Author(s):  
Sun Rock Choi ◽  
Dong Sik Kim ◽  
Sung Hoon Choa
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Transport Properties ◽  
Thermal Transport ◽  
Metallic Thin Films ◽  
Micro Electro Mechanical Systems ◽  
Thermal Transport Properties ◽  
Atomic Force Microscope Measurement ◽  
Evaporation Technique ◽  
Thermal Diffusivities

The thermal properties of thin films, such as thermal conductivity and diffusivity, are important in design and analysis of MEMS (micro electro mechanical systems), particularly in microscale thermal systems and high-power electronic/optoelectronic devices. In the present study, the thermal conductivity and diffusivity of a variety of thin film materials, which are commonly used in MEMS applications, are measured. The samples include Au, Sn, Mo, Al/Ti alloy, AlN, and SiC. The Au sample is deposited by the e-beam evaporation technique while the rest of the metallic samples are deposited by sputtering processes. The AlN and SiC films are also prepared by sputtering processes. In the experiment, the thermal diffusivities of metallic thin films are measured by two independent methods — the AC calorimetric method and photothermal mirage technique. The thermal conductivities of dielectric thin films are measured by the 3 omega technique. The results show that the thermal transport properties of some of the films are significantly smaller than those of the same material in bulk form. Especially, the AlN and SiC thin films exhibit pronounced thermal conductivity reduction because of the size effect. The electrical conductivities of the metallic thin films are measured as well. The results for Au and Sn are consistent with the thermal conductivity, confirming the Wiedmann-Franz law. However, Al/Ti and Mo thin films show considerable deviation from the law. The results are analyzed based on the XRD (X-Ray diffraction) and AFM (Atomic Force Microscope) measurement.

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