Results 51 to 60 of about 5,374 (207)

Porous Bi2S3 Bulk With Excellent Thermoelectric Performance by Solid States Replacement and Low Melting‐Point Metal Volatilization

Advanced Materials, EarlyView.
By introducing FeCoNi medium‐entropy alloy, the bismuth sulfide (Bi2S3) material achieves a record‐high ZT of 1.1 at 773 K, owing to the solid‐states replacement reaction and the volatilization of low melting‐point metal. This strategy is also applicable to other sulfur‐based thermoelectric materials.
Zi‐Yuan Wang, Jun Guo, Yi‐Xin Zhang, Hao Liang, Xing Yang, Rafal E. Dunin‐Borkowski, Fengshan Zheng, Lei Jin, Jing Feng, Zhen‐Hua Ge   +9 more
wiley   +1 more source

DFT+U investigation of electronic, optical, and thermoelectric properties of YAuX (X=Si or Ge or Sn) half-Heusler alloys

Results in Physics
Half-heusler alloys are fascinating thermoelectric materials because they have superior mechanical and transport properties. In this study, we used dft+u calculations and the Boltztrap equation to examine the electronic, optical, and thermoelectric ...
Job W. Wafula, George S. Manyali, John W. Makokha, Yusuf Madallah, Soukaina Bouhmaidi, Larbi Setti   +5 more
doaj   +1 more source

Effects of the wheel rotation speed during the melt-spinning process on the structural morphology and the thermoelectric properties of Ti_0.5Zr_0.5NiSn alloy

Vietnam Journal of Science, Technology and Engineering, 2023
Half-Heusler alloys based on (Ti, Hf, Zr)NiSn possess excellent mechanical and chemical properties as well as high thermal stability, making them promising materials for high-performance thermoelectric (TE) power generators. However, the high cost of Hf
Nguyen Van Du, Nguyen Tu, Do Quang Trung, Noy Sysavanh, Manh Trung Tran, Tong Thi Hao Tam   +5 more
doaj  

Investigation of novel quaternary Heusler alloys XRuCrZ (X = Co, Ni, Rh, and Pd; Z = Si and Ge) via first-principles calculation for spintronics and thermoelectric applications

AIP Advances, 2022
The structural, electronic, magnetic, and transport properties of LiMgPdSb-type novel quaternary Heusler alloys XRuCrZ (X = Co, Ni, Rh, and Pd; Z = Si and Ge) have been studied employing the first-principles calculation derived from density functional ...
Roshme Prakash, G. Suganya, G. Kalpana
doaj   +1 more source

Defects-driven appearance of half-metallic ferrimagnetism in Co-Mn--based Heusler alloys

, 2007
Half-metallic ferromagnetic full-Heusler alloys containing Co and Mn, having the formula Co$_2$MnZ where Z a sp element, are among the most studied Heusler alloys due to their stable ferromagnetism and the high Curie temperatures which they present ...
Aktas, B., Galanakis, I., Ozdogan, K., Sasioglu, E.   +3 more
core   +1 more source

A mechanistic view of defect engineered VFeSb half-Heusler alloys

Materials Advances, 2022
Stoichiometric alteration induces characteristic granular defects in VFeSb half-Heusler microstructure.
Nagendra S. Chauhan, Yuzuru Miyazaki
openaire   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

The Electronic, Magnetic, Half-Metallic and Mechanical Properties of the Equiatomic Quaternary Heusler Compounds FeRhCrSi and FePdCrSi: A First-Principles Study

Applied Sciences, 2018
By using the first-principles method, the electronic structures and magnetism of equiatomic quaternary Heusler alloys FeRhCrSi and FePdCrSi were calculated. The results show that both FeRhCrSi and FePdCrSi compounds are ferrimagnets.
Liefeng Feng, Jiannan Ma, Yue Yang, Tingting Lin, Liying Wang   +4 more
doaj   +1 more source

Computational investigation of the Fe2XAs (X = Mn and Co) full Heusler alloy: Structural, electronic, and magnetic properties

Results in Physics, 2023
A comprehensive detailed computational investigation of the structural, electronic, magnetic, and mechanical properties of Fe2XAs (X = Mn and Co) Full Heusler Alloy is performed using density functional theory (DFT).
Bilal Aladerah, Abdalla Obeidat
doaj   +1 more source

Electronic structure of half-metallic magnets

, 2006
We have analyzed the electronic structure of half-metallic magnets based on first principles electronic structure calculations of a series of semi-Heusler alloys. The characteristic feature of the electronic structure of semi-Heusler systems is a d-d gap
Akinaga, Andersen, B.R.K. Nanda, de Groot, Dronskowski, Fang, Galanakis, Hedin, I. Dasgupta, Jung, Kobayashi, Lewis, Matsumoto, Munekata, Nanda, Ohno, Park, Perdew, Pickett, Sarma, Sarma, Soulen, Ueda, von Barth, Zhang, Zutic   +25 more
core   +1 more source