Results 101 to 110 of about 2,269 (194)

Magneto and ferroelectric phase transitions in HoMn2O5 monocrystals

, 2007
From the physical point of view multiferroics present an extremely interesting class of systems and problems. These are essentially of two kinds. One is what are the microscopic conditions, and sometimes constrains, which determine the possibility to ...
Blake, Chahara, Chapon, Fiebig, Higashiyama, Hur, I. Radulov, Kagomiya, Kenzelmann, Kobayashi, M. Daszkiewicz, Mostovoy, Radulov, Subramanian, Tachibana, V. Lovchinov, von Helmolt, Wilkinson   +17 more
core   +1 more source

Advanced humidity sensing properties of CuO ceramics

Scientific Reports
This research explores the capacitive humidity sensing properties of CuO ceramic, selected for its simplicity as an oxide and ease of fabrication, in addition to its remarkable dielectric properties.
Kaniknun Sreejivungsa, Noppakorn Thanamoon, Nutthakritta Phromviyo, Wirat Jarernboon, Masaki Takesada, Prasit Thongbai   +5 more
doaj   +1 more source

Dielectric catastrophe at the magnetic field induced insulator to metal transition in Pr1-xCaxMnO3 (x=0.30, 0.37) crystals

, 2006
The dielectric permittivity and resistivity have been measured simultaneously as a function of magnetic field in Pr1-xCaxMnO3 crystals with different doping. A huge increase of dielectric permittivity was detected near percolation threshold.
Aebischer, Aebischer, Asamitsu, B. Kundys, Bergmann, Bruggeman, Byczuk, C. Martin, Castner, Ch. Simon, Choi, Cohen, Cox, Dobrosavljevic, Efremov, Efros, Freitas, Georges, Goto, Goto, Hardy, Harris, Hubbard, Jung, Kimura, Kimura, Kiryukhin, Laad, Lorenz, Mercone, Miyano, Morimoto, N. Bellido, Noh, Pimenov, Rivadulla, Rosenbaum, Sarker, Saurel, Straley, Tu, Valenzuela, Zhang   +42 more
core   +2 more sources

Effect of (Cr, Fe)-substitution at B sites of CuB1-x(Cr1/2Fe1/2)xO2 delafossite oxides on optical, magnetic, and dielectric properties

Engineering and Applied Science Research, 2021
In this work, we report room temperature ferromagnetic and colossal dielectric behavior in delafossite oxides of CuB1-x(Cr1/2Fe1/2)xO2 with x = 0.01 and 0.03. All samples were synthesized by the solid-state reaction method.
Sornamol Traiphop, Teerasak Kamwanna
doaj  

New insight into the colossal dielectric constant of polycrystalline CaCu3Ti4O12 underlying the physical mechanisms of the dielectric relaxation

AIP Advances
The new mechanisms of dielectric relaxations previously proposed for polycrystalline CaCu3Ti4O12 (CCTO), modeled by the super-linear power law and extended power law concerning the AC conductivity spectra, are presented on the basis of the cluster model ...
Tsang-Tse Fang, Hsuan-Jung Hsu, Hsing-I. Hsiang   +2 more
doaj   +1 more source

Breaking the loss barrier in CCTO: sol–gel tin enables high permittivity with capacitor-grade loss tangent

Results in Physics
Sn-doped CaCu3Ti4O12 (CCTO) ceramics were synthesized by a sol–gel polymerization route using tin (II) acetate and low-temperature sintering (1015–1020 °C) to overcome the long-standing trade-off between colossal permittivity and dielectric loss (tan δ).
Sasitorn Putjuso, Anuchit Hunyek, Sunan Nonglek, Thanin Putjuso   +3 more
doaj   +1 more source

Giant dielectric response and humidity sensing properties of Na1/2Bi1/2Cu3Ti4+xO12 ceramics

Next Materials
In this study, the influence of excess Ti content on the dielectric behavior and humidity sensing capability of Na1/2Bi1/2Cu3Ti4+xO12 ceramics (x = 0, 0.1, and 0.2) was investigated.
Pariwat Saengvong, Prasit Thongbai
doaj   +1 more source

Modeling of the magnetorefractive effect in Co-Al₂O₃ nanocomposites in the framework of the Bruggeman approximation

Российский технологический журнал
Objectives. To investigate the magnetorefractive effect (MRE) in nanocomposites, which consists in changing the reflection, transmittance and light absorption coefficients of samples with large magnetoresistance (MR) upon their magnetization.
M. A. Mukhutdinova, A. N. Yurasov
doaj   +1 more source

Enhanced humidity-sensing performance of (Zr4+/Sb5+)-codoped TiO2 ceramics with giant dielectric properties

Journal of Advanced Ceramics
In this study, (Zr0.5/Sb0.5)xTi1−xO2 ceramics with x = 0.01, 0.025, and 0.05 were prepared via the solid-state reaction (SSR) method. A pure phase of rutile TiO2 with a highly dense microstructure and relative density (ρr) higher than 96% was detected in
Noppakorn Thanamoon, Nateeporn Thongyong, Kaniknun Sreejivungsa, Narong Chanlek, Prasit Thongbai   +4 more
doaj   +1 more source

Structural, morphological, dielectric, and electrical characteristics of a brownmillerite material for electronic devices: KBiMn2O5

Chemical Physics Impact
The main objective this communication is to study the structural, morphological, dielectric, and electrical properties of a novel brownmillerite material, KBiMn2O5.
D Panda, S.S. Hota, R N P Choudhary
doaj   +1 more source