Results 31 to 40 of about 166,949 (328)

High-entropy perovskite ceramics: Advances in structure and properties [PDF]

open access: yesProcessing and Application of Ceramics
High-entropy ceramic materials usually refer to the multi-principal solid solution formed by 5 or more ceramic components. Due to its novel “high-entropy effect” and excellent performance, it has become one of the research hotspots in the field of ...
Ding Yiwen   +10 more
doaj   +1 more source

High-entropy high-hardness metal carbides discovered by entropy descriptors [PDF]

open access: yes, 2018
High-entropy materials have attracted considerable interest due to the combination of useful properties and promising applications. Predicting their formation remains the major hindrance to the discovery of new systems.
Brenner, Donald W.   +8 more
core   +3 more sources

Entropy regulation in LaNbO4-based fergusonite to implement high-temperature phase transition and promising dielectric properties

open access: yesJournal of Advanced Ceramics, 2023
High-entropy effect is a novel design strategy to optimize properties and explore novel materials. In this work, (La1/5Nd1/5Sm1/5Ho1/5Y1/5)NbO4 (5RNO) high-entropy microwave dielectric ceramics were successfully prepared in the sintering temperature (S.T.
Deqin Chen   +7 more
doaj   +1 more source

Direct measurement of giant electrocaloric effect in BaTiO3 multilayer thick film structure beyond theoretical prediction [PDF]

open access: yes, 2010
The electrocaloric effect of BaTiO3 multilayer thick film structure was investigated by direct measurement and theoretical calculation. The samples were prepared by the tape-casting method, which had 180 dielectric layers with an average thickness of 1.4\
Bai, Yang   +2 more
core   +2 more sources

Facile Preparation, Microstructure and Dielectric Properties of La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 Perovskite High-Entropy Ceramics

open access: yesCrystals, 2022
Preparation and properties of La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 high-entropy ceramics are investigated. La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 high-entropy ceramics are prepared by a traditional two-step solid-state reaction method in air.
Zhifeng Tian   +3 more
doaj   +1 more source

Superhard high-entropy AlB2-type diboride ceramics

open access: yesScripta Materialia, 2021
Hardness was measured for six different nominally pure and single-phase high-entropy diboride ceramics with the AlB structure that were produced by a two-step process. Most of the ceramics had relative densities greater than 99.5%. Vickers hardness average values ranged from 21.0 GPa to 25.4 GPa at a load of 9.81 N, while values increased to the range ...
Lun Feng   +3 more
openaire   +3 more sources

Discovery of high-entropy ceramics via machine learning [PDF]

open access: yes, 2020
Although high-entropy materials are attracting considerable interest due to a combination of useful properties and promising applications, predicting their formation remains a hindrance for rational discovery of new systems.
Curtarolo, Stefano   +9 more
core   +1 more source

Preparation and field-induced electrical properties of perovskite relaxor ferroelectrics [PDF]

open access: yes, 2015
(111)-oriented and random oriented Pb0.8Ba0.2ZrO3 (PBZ) perovskite relaxor ferroelectric thin films were fabricated on Pt(111)/TiOx/SiO2/Si substrate by sol-gel method.
Fan, Huiqing, Peng, Biaolin, Zhang, Qi
core   +1 more source

Finite element formulation to study thermal stresses in nanoencapsulated phase change materials for energy storage [PDF]

open access: yes, 2020
Nanoencapsulated phase change materials (nePCMs) – which are composed of a core with a phase change material and of a shell that envelopes the core – are currently under research for heat storage applications. Mechanically, one problem encountered in the
Forner Escrig, Josep   +2 more
core   +1 more source

New ZrB$_2$ polymorphs: First-principles calculations

open access: yes, 2020
Two new hypothetical zirconium diboride (ZrB2) polymorphs: (hP6-P63/mmc space group, no.194) and (oP6-Pmmn-space group, no.59), were thoroughly studied under the first-principles density functional theory calculations from the structural, mechanical and ...
Maździarz, Marcin, Mościcki, Tomasz
core   +1 more source

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