Results 161 to 170 of about 5,301 (199)

Vibrational Entropy Stabilizes Distorted Half-Heusler Structures

Chemistry of Materials, 2020
First-principles methods have been extensively used for prediction of half-Heusler (HH) phases for a wide range of functional properties.
Shuping Guo, Shashwat Anand, Yongsheng Zhang, G. Jeffrey Snyder   +3 more
openaire   +1 more source

NMR properties of half‐Heusler CoVSb

physica status solidi c, 2006
The complex NMR properties of CoVSb are reported. On the basis of band structure calculations the compound is predicted to be a half metallic ferromagnet but magnetisation measurements suggest that the compound is a weak ferromagnet. In zero applied field at 4.2 K, three spin echo signals have been observed with peak frequencies of 30, 63 and 82 MHz ...
H. Nishihara, T. Kanomata, Y. Furutani, T. Igarashi, K. Koyama, T. Goto   +5 more
openaire   +1 more source

Piezoelectricity in half-Heusler narrow-bandgap semiconductors

Science
Piezoelectricity is primarily observed in noncentrosymmetric insulators or wide bandgap semiconductors. We report the observation of the piezoelectric (PE) effect in half-Heusler (HH) narrow-bandgap semiconductors TiNiSn, ZrNiSn, and TiCoSb. These materials exhibit shear PE strain coefficients that reach ~38 and 33 picocoulombs per newton in ZrNiSn and
Yi Huang, Fu Lv, Shen Han, Mengzhao Chen, Yuechu Wang, Qianhui Lou, Chenguang Fu, Yuhui Huang, Di Wu, Fei Li, Tiejun Zhu   +10 more
exaly   +3 more sources

Half-Heusler thermoelectrics: a complex class of materials

Journal of Physics: Condensed Matter, 2014
Half-Heusler thermoelectrics first attracted interest in the late-1990s and are currently undergoing a renaissance. This has been driven by improved synthesis, processing and characterisation methods, leading to increases in the thermoelectric figure of merit and the observation of novel phenomena such as carrier filtering in nanocomposite samples. The
Jan-Willem G, Bos, Ruth A, Downie
openaire   +2 more sources

Ab initio investigation on Half-Heusler CoTiSi

Materials Today: Proceedings, 2020
Abstract We report band structural calculations on half-Heusler alloy CoTiSi using Korringa–Kohn–Rostoker method applied for various formalism of potential. Murnaghan equation of state is used to minimize ground state total energy and then equilibrium lattice parameter is estimated. From density of state (DOS), it is seen that the Fermi energy is not
Shikha Singh, Himanshu Pandey
openaire   +1 more source

Recent progress in half-Heusler thermoelectric materials

Materials Research Bulletin, 2016
Abstract Half-Heusler (HH) thermoelectric (TE) materials have been attracting extensive research interest over the last two decades, owing to their thermal stability, mechanical strength, and moderate ZT . This material system are potential candidates for medium to high temperature applications, which is close to the temperature range of most ...
Lihong Huang, Qinyong Zhang, Bo Yuan, Xiang Lai, Xiao Yan, Zhifeng Ren   +5 more
openaire   +1 more source

Thermoelectric properties of Ti0.3Zr0.35Hf0.35Ni1.005Sn half-Heusler alloy

Journal of Applied Physics, 2019
Thermoelectrics enabling a direct conversion of waste heat into useful electricity is widely investigated for renewable energy applications. n-type half-Heusler (HH) MNiSn (M = Ti,Zr,Hf) thermoelectric (TE) elements are known as attractive semiconducting candidates for such purposes.
Oshrat Appel, Tal Zaharoni, Gil Breuer, Ofer Beeri, Yaniv Gelbstein   +4 more
openaire   +1 more source

Thermoelectric properties of half-Heusler alloys

International Materials Reviews
Half-Heusler alloys (HHs) as medium- and high-temperature thermoelectric materials have attracted increasing considerable attention, owing to their excellent mechanical properties and thermal stability. Nonetheless, the intercoupling between the Seebeck coefficient and electrical conductivity, and their high thermal conductivity limit the furthermore ...
Rongchun Chen, Huijun Kang, Ruonan Min, Zongning Chen, Enyu Guo, Xiong Yang, Tongmin Wang   +6 more
exaly   +2 more sources

Electronic structure of half-Heusler semiconductor LiBeN

Physics Letters A, 2007
A new cubic half-Heusler structure LiBeN can be derived from the zinc-blende BN, and has a similar band structure to BN. The structural, elastic properties and band structures of LiBeN and zinc-blende BN were studied using the full potential augmented plane wave plus local orbitals method within density functional theory.
L.H. Yu, K.L. Yao, Z.L. Liu, Y.S. Zhang
openaire   +1 more source

Topological Rare Earth Half-Heusler HoPtBi

2019
Magnetic HoPtBi is created and characterized as a new half-Heusler Weyl-candidate. By analogy with the well-studied GdPtBi system we undertake measurements intended to understand the normal state of this material, before extending our study to search for characteristics of Weyl behavior.
openaire   +2 more sources