Results 31 to 40 of about 2,365 (229)

Origin of ferroelectric polarization in tetragonal tungsten-bronze-type oxides [PDF]

, 2016
The origin of ferroelectric polarization in tetragonal tungsten-bronze- (TTB-) type oxide strontium barium niobate (SBN) is investigated using first-principles density functional calculations.
Spaldin, Nicola A., Aschauer, Ulrich Johannes, Selbach, Sverre Magnus, Olsen, Gerhard Henning, Grande, Tor, Aschauer, Ulrich   +5 more
core   +1 more source

Aerosol Synthesis of Tungsten Bronze Particles for NIR Shielding

, 2023
This dissertation emphasizes the need for efficient energy use in buildings and transportation due to global warming and the energy crisis. It suggests that improving energy efficiency can help reduce energy consumption and emissions and support ...
Tu, Hao
core   +1 more source

OPTICAL PROPERTIES OF AMORPHOUS THIN FILMS OF SODIUM-TUNGSTEN OXIDE BRONZES

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
The spectral dependences were measured of the optical density of amorphous thin films of sodium-tungsten oxide bronze of the tetragonal structure and the composition Na0,3WO3, condensed on glass substrates, thermostated at temperatures of 373, 473 and ...
B.M. Khubolov
doaj   +1 more source

High-Pressure Synthesis of Non-Stoichiometric Li_xWO₃ (0.5 ≤ x ≤ 1.0) with LiNbO₃ Structure

Inorganics, 2019
Compounds with the LiNbO3-type structure are important for a variety of applications, such as piezoelectric sensors, while recent attention has been paid to magnetic and electronic properties. However, all the materials reported are stoichiometric.
Kohdai Ishida, Yuya Ikeuchi, Cédric Tassel, Hiroshi Takatsu, Craig M. Brown, Hiroshi Kageyama   +5 more
doaj   +1 more source

Vogel-Fulcher analysis of relaxor dielectrics with the tetragonal tungsten bronze structure : Ba6MNb9O30 (M = Ga, Sc, In)

, 2015
In-depth analysis of the relaxor behaviour of Ba6MNb9O30 (M= Ga, Sc, In) tetragonal tungsten bronze (TTB) ceramics was carried out. Powder x-ray diffraction and scanning electron microscopy were performed in order to confirm the formation of desired ...
Morrison, Finlay D., Rotaru, Andrei
core   +1 more source

Structure and thermal expansion of the tungsten bronze Pb2KNb5O15

, 2014
The structure and thermal expansion behavior of the tetragonal tungsten bronze oxide Pb2KNb5O15 were investigated by neutron powder diffraction and high-temperature X-ray diffraction.
Deng, Jinxia, Wang, Fangfang, Lin, Kun, Chen, Jun, Wu, Hui, Huang, Qingzhen, Rong, Yangchun, Yu, Ranbo, Fang, Liang, Xing, Xianran   +9 more
core   +1 more source

Strain Engineering via W–O–Ru Interfacial Coupling to Suppress Lattice Oxygen Activation for Stable Acidic Water Electrolysis

Angewandte Chemie, EarlyView.
Constructing atomically coupled W–O–Ru interfacial units on RuO2 triggers a dynamic strain evolution during the oxygen evolution reaction. An initial tensile strain secures structural stability, while a self‐adjusting transition to interfacial compression optimizes catalytic activity.
Yi Guan, Xiaozhang Yao, Ruiwen Qi, Xiangzhong Ren, Gaowa Liu, Zhongxin Song, Lei Zhang, Xueliang Sun   +7 more
wiley   +2 more sources

NMR and the local structure of relaxors [PDF]

Science of Sintering, 2002
The relaxor transition in cubic perovskite relaxors (PMN, PSN and PST) and tungsten bronze relaxor (SBN) has been studied by NMR. The observed spectra are composed of a narrow -1/2 « 1/2 central transition superimposed on a broad background due to ...
Blinc R., Zalar B., Gregorovič Alan
doaj   +1 more source

Synthesis of new praseodymium doped phosphate tungsten bronze [PDF]

, 2022
For the preparation of praseodymium doped phosphate tungsten bronze (Pr-PWB), as a starting material is used 12-tungstophosphoric heteropoly acid H3PW12O40×29H2O (PWA) [1].
Tančić, Pavle, Pagnacco, Maja, Maksimović, Tijana, Maksimović, Jelena   +3 more
core  

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source