scholarly journals Normal and abnormal dielectric relaxation behavior in KTaO3 ceramics

RSC Advances ◽  
2017 ◽  
Vol 7 (80) ◽  
pp. 50680-50687 ◽  
Author(s):  
Lei Tong ◽  
Jie Sun ◽  
Shuting Wang ◽  
Youmin Guo ◽  
Qiuju Li ◽  
...  
Keyword(s):  
Solid State ◽  
Dielectric Relaxation ◽  
Solid State Reaction ◽  
Relaxation Behavior ◽  
Reaction Route ◽  
Conventional Solid State Reaction ◽  
Ceramic Samples ◽  
Solid State Reaction Route ◽  
Dielectric Relaxation Behavior

KTaO3 ceramic samples were prepared via a conventional solid state reaction route.

Molten Salt Synthesis of Nanocrystalline Phase of High Dielectric Constant Material CaCu3Ti4O12

2008 ◽  
Vol 8 (11) ◽  
pp. 5762-5769 ◽  
Author(s):  
B. Shri Prakash ◽  
K. B. R. Varma
Keyword(s):  
Dielectric Constant ◽  
Grain Size ◽  
Solid State ◽  
Molten Salt ◽  
Solid State Reaction ◽  
Molten Salt Synthesis ◽  
Reaction Route ◽  
Conventional Solid State Reaction ◽  
Phase Pure ◽  
Solid State Reaction Route

Nanocrystalline powders of giant dielectric constant material, CaCu3Ti4O12 (CCTO), have been prepared successfully by the molten salt synthesis (MSS) using KCl at 750 °C/10 h, which is significantly lower than the calcination temperature (∼1000 °C) that is employed to obtain phase pure CCTO in the conventional solid-state reaction route. The water washed molten salt synthesized powder, characterized by X-ray powder diffraction (XRD), Scanning electron microscopy (SEM), and Transmission electron microscopy (TEM) confirmed to be a phase pure CCTO associated with ∼150 nm sized crystallites of nearly spherical shape. The decrease in the formation temperature/duration of CCTO in MSS method was attributed to an increase in the diffusion rate or a decrease in the diffusion length of reacting ions in the molten salt medium. As a consequence of liquid phase sintering, pellets of as-synthesized KCl containing CCTO powder exhibited higher sinterability and grain size than that of KCl free CCTO samples prepared by both MSS method and conventional solid-state reaction route. The grain size and the dielectric constant of KCl containing CCTO ceramics increased with increasing sintering temperature (900 °C–1050 °C). Indeed the dielectric constants of these ceramics were higher than that of KCl free CCTO samples prepared by both MSS method and those obtained via the solid-state reaction route and sintered at the same temperature. Internal barrier layer capacitance (IBLC) model was invoked to correlate the observed dielectric constant with the grain size in these samples.

scholarly journals Magnetic ion oxidation state dependent magnetoelectric coupling strength in Fe doped BCT ceramics

RSC Advances ◽  
2020 ◽  
Vol 10 (35) ◽  
pp. 21019-21027
Author(s):  
Aanchal Chawla ◽  
Anupinder Singh ◽  
P. D. Babu ◽  
Mandeep Singh
Keyword(s):  
Solid State ◽  
Coupling Strength ◽  
Solid State Reaction ◽  
Ferroelectric Properties ◽  
Reaction Route ◽  
Conventional Solid State Reaction ◽  
State Dependent ◽  
Significant Difference ◽  
Solid State Reaction Route ◽  
Magnetic Ion

Polycrystalline samples of Ba0.96Ca0.04Ti0.91Fe0.09O3 were prepared using a conventional solid state reaction route with different Fe starting precursors (Fe2O3, Fe3O4). A significant difference in the magnetic and ferroelectric properties was observed.

ON THE ENERGY TRANSFER IN LiMgPO4 DOPED WITH RARE-EARTH ELEMENTS

2021 ◽  
Author(s):  
Dina Georgievna Kellerman ◽  
Mikhael Kalinkin ◽  
Dmitriy Akulov ◽  
Rinat Abashev ◽  
Vladimir G. Zubkov ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Solid State ◽  
Rare Earth Elements ◽  
Solid State Reaction ◽  
Orthorhombic Structure ◽  
Reaction Route ◽  
Conventional Solid State Reaction ◽  
Solid State Reaction Route ◽  
Type Orthorhombic

The phosphates LiMgPO4: RE (RE - Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm) with olivine-type orthorhombic structure were synthesized by the conventional solid state reaction route and their optical...

Promoted hydrogen release from ammonia borane with mannitolvia a solid-state reaction route

2012 ◽  
Vol 41 (3) ◽  
pp. 871-875 ◽  
Author(s):  
Yuede Pan ◽  
Yan Wang ◽  
Yanliang Liang ◽  
Zhanliang Tao ◽  
Jun Chen
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Ammonia Borane ◽  
Hydrogen Release ◽  
Reaction Route ◽  
Solid State Reaction Route

Synthesis of ultrafine superconducting MgB2 by a convenient solid-state reaction route

2004 ◽  
Vol 405 (3-4) ◽  
pp. 271-274 ◽  
Author(s):  
Liang Shi ◽  
Yunle Gu ◽  
Tian Qian ◽  
Xiaoguang Li ◽  
Luyang Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Reaction Route ◽  
Solid State Reaction Route

Microwave-hydrothermal accelerated solid state reaction route for the synthesis of La0.5Ba0.5MnO3

2004 ◽  
Vol 58 (5) ◽  
pp. 837-841 ◽  
Author(s):  
S.A. Mirji ◽  
Y.B. Khollam ◽  
S.B. Deshpande ◽  
H.S. Potdar ◽  
R.N. Bathe ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Reaction Route ◽  
Microwave Hydrothermal ◽  
Solid State Reaction Route

scholarly journals Conductivity and giant permittivity study of Zn0.5Ni0.5Fe2O4 spinel ferrite as a function of frequency and temperature

RSC Advances ◽  
2019 ◽  
Vol 9 (56) ◽  
pp. 32395-32402 ◽  
Author(s):  
Mohsen Elain Hajlaoui ◽  
Radhia Dhahri ◽  
Nessrine Hnainia ◽  
Aida Benchaabane ◽  
Essebti Dhahri ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Spinel Ferrite ◽  
Reaction Route ◽  
Different Temperatures ◽  
Solid State Reaction Route

Ni0.5Zn0.5Fe2O4 was prepared by the solid state reaction route at different temperatures.

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