Results 31 to 40 of about 27,124 (303)

Topological frustration of artificial spin ice [PDF]

open access: yes, 2017
Frustrated systems, typically characterized by competing interactions that cannot all be simultaneously satisfied, display rich behaviours not found elsewhere in nature.
Cumings, John   +2 more
core   +2 more sources

Design and thermophysical properties of (Sm0.2Gd0.2Eu0.2Lu0.2Dy0.2)2Zr2O7 high entropy rare earth zirconic acid ceramic materials

open access: yesCailiao gongcheng
To improve the service temperature of high-temperature components in engines and search for high-temperature resistant and high thermal insulation thermal barrier coating materials to replace YSZ, a high entropy rare earth zirconate ceramic material is ...
ZHOU Shaoshuai   +5 more
doaj   +1 more source

Dielectric and ferroelectric characteristics of Ba(Ti0.25Zr0.25Hf0.25Sn0.25)O3 high-entropy ceramics

open access: yesJournal of Materiomics, 2023
Ba(Ti0.25Zr0.25Hf0.25Sn0.25)O3 high-entropy ceramics were prepared by a standard solid state reaction process, and the dielectric and ferroelectric characteristics were investigated together with the structures.
Rui Hu Mi   +3 more
doaj   +1 more source

Elastic models for the non-Arrhenius viscosity of glass-forming liquids [PDF]

open access: yes, 2006
This paper first reviews the shoving model for the non-Arrhenius viscosity of viscous liquids. According to this model the main contribution to the activation energy of a flow event is the energy needed for molecules to shove aside the surrounding, an ...
Adam   +49 more
core   +2 more sources

Research progress in high-entropy carbide ceramic materials

open access: yesCailiao gongcheng
In recent years, high-entropy ceramics have attracted extensive attention from scholars at home and abroad because of their superior properties to traditional ceramic materials and ability to meet the needs of extreme service environments better.
XIE Chenyi   +4 more
doaj   +1 more source

Single-phase high-entropy intermetallic compounds (HEICs): bridging high-entropy alloys and ceramics

open access: yesScience Bulletin, 2019
High-entropy intermetallic compounds (HEICs) were fabricated by mechanical alloying and spark plasma sintering to fill a knowledge gap between the traditional high-entropy alloys (HEAs) and emerging high-entropy ceramics (HECs). Notably, several four- or five-component equimolar aluminides, such as the B2-phase (Fe1/5Co1/5Ni1/5Mn1/5Cu1/5)Al, have been ...
Zhou, Naixie   +5 more
openaire   +4 more sources

Research status and prospects of high-entropy composite ceramics

open access: yesJournal of Asian Ceramic Societies
With the continuous advancement of research in the field of high-entropy ceramic materials, high-entropy composite ceramics have attracted considerable attention from international scholars due to their unique properties and advantages derived from ...
Heng Zhao   +5 more
doaj   +1 more source

A review of the high-entropy ceramic materials for thermal barrier coatings: Design, synthesis, sintering and properties [PDF]

open access: yesProcessing and Application of Ceramics
Thermal barrier coatings are used as a surface technology for hot-end components of turbine engines, and the continuous development of aerospace technology puts higher requirements on ceramic materials for thermal barrier coatings. High-entropy ceramics,
Liu Jiahang   +7 more
doaj   +1 more source

First-principles study, fabrication and characterization of (Zr0.25Nb0.25Ti0.25V0.25)C high-entropy ceramic [PDF]

open access: yes, 2019
The formation possibility of a new (Zr0.25Nb0.25Ti0.25V0.25)C high-entropy ceramic (ZHC-1) was first analyzed by the first-principles calculations and thermodynamical analysis and then it was successfully fabricated by hot pressing sintering technique ...
Chu, Yanhui   +5 more
core   +2 more sources

Correlations between Elastic, Calorimetric, and Polar Properties of Ferroelectric PbSc0.5Ta0.5O3 (PST) [PDF]

open access: yes, 2019
Calorimetric, elastic, and polar properties of ferrolectric lead scandium tantalate PbSc0.5Ta0.5O3 (PST) with 65% cation order have been investigated in the vicinity of the paraelectric-ferroelectric transition at Ttrans = 295K.
Ekhard K. H. Salje   +9 more
core   +1 more source

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