Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Kbr Varma"'
Autor:
V. Sai Muthukumar, Akash Pradhan, Muralikrishna Molli, Tukaram Shet, Kbr Varma, Sai Pavan Prashanth Sadhu, B K Abhijit
Publikováno v:
Optical Materials. 69:128-133
We report here the structure property correlation of Tellurium Vanadate (Te 2 V 2 O 9 ) through various optical and vibrational spectroscopic investigations. Pure phase polycrystalline powder of Te 2 V 2 O 9 was prepared by solid state reaction techn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03b16cd71996967a252549abe108615d
https://doi.org/10.1016/j.optmat.2017.04.028
https://doi.org/10.1016/j.optmat.2017.04.028
Autor:
Kbr Varma, Bharathi Ponraj
Publikováno v:
Integrated Ferroelectrics. 176:257-267
The addition of powdered 0.5 Li2O-0.5K(2)O-2B(2)O(3) (LKBO) glass (0.5 to 2wt%) to potassium sodium niobate, K0.5Na0.5NbO3 (KNN) powder facilitated higher densification which resulted in improved physical properties that include dielectric, piezoelec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63d1642bdb7565ba1c8415140b3150b6
https://doi.org/10.1080/10584587.2016.1252659
https://doi.org/10.1080/10584587.2016.1252659
Autor:
Kbr Varma, Tukaram Shet
Publikováno v:
Ferroelectrics. 502:87-100
Sr2Bi4Ti5O18 ceramics were fabricated using the pre-reacted Bi4Ti3O12 and SrTiO3 powders via solid-state reaction route. These in stoichiometric ratio were uniaxially pressed and sintered at 1130°C for 3 h to obtain textured ceramics. The obtained d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d0a68abea522c38213dcbcdefbd3ade
https://doi.org/10.1080/00150193.2016.1234322
https://doi.org/10.1080/00150193.2016.1234322
Autor:
Tukaram Shet, Kbr Varma
Publikováno v:
Journal of Crystal Growth. 449:57-61
Te 2 V 2 O 9 single crystals were grown along the polar c -axis via the Czochralski crystal growth technique. Dielectric studies carried out along the polar axis in a wide temperature range at different frequencies confirmed the relaxor nature of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f145c1503d7d241429d8fba778ed0ea2
https://doi.org/10.1016/j.jcrysgro.2016.05.043
https://doi.org/10.1016/j.jcrysgro.2016.05.043
Publikováno v:
Solid State Communications. 241:7-13
Calcium copper titanate on doping Teo(4+) at Ti4+ sites transformed structurally to centrosymmetric tetragonal double perovskite. Indeed selected area electron diffraction studies carried out on Te doped ceramics corroborate the refined X-ray diffrac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e70a36cd9bb683e34f51a3ed005fb29
https://doi.org/10.1016/j.ssc.2016.04.018
https://doi.org/10.1016/j.ssc.2016.04.018
Publikováno v:
Materials Science and Engineering: B. 211:101-109
Strontium bismuth titanate (Sr2Bi4Ti5O18) powders comprising crystallites of average sizes in the range of 94–1400 nm were prepared via citrate-assisted sol-gel route. With an increase in the average crystallite size there was a change in the latti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32a4b6247e305e7913591ee1bf649910
https://doi.org/10.1016/j.mseb.2016.06.003
https://doi.org/10.1016/j.mseb.2016.06.003
Publikováno v:
Ceramics International. 42:13572-13585
Sm1-xCaxFeO3 where x=0, 0.25, 0.5, 0.75 and 1.0 was synthesized via the sol-gel method at low temperatures in steps of x=0.25. The as-prepared powders were characterized by Thermogravimetric Analysis (TGA), Transmission Electron Microscopy (TEM) and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::274b3b7635c7051d371780e668c95cc4
https://doi.org/10.1016/j.ceramint.2016.05.150
https://doi.org/10.1016/j.ceramint.2016.05.150
Grain size-dependent dielectric, piezoelectric and ferroelectric properties of Sr2Bi4Ti5O18 ceramics
Publikováno v:
Journal of Materials Science. 51:9253-9266
Fine powders comprising nano-crystallites of Sr2Bi4Ti5O18 (SBT) were synthesized via citrate-assisted sol–gel route. Different ceramics of SBT with different grain sizes (93 nm–1.42 μm) were fabricated by varying sintering temperatures and durat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dbdfec85f6a9bb0c7bda5ba07afee18
https://doi.org/10.1007/s10853-016-0172-5
https://doi.org/10.1007/s10853-016-0172-5
Publikováno v:
Materials Research Bulletin. 74:1-8
Zn1-xMgxO (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e8c427701329d6df775308357a96019
https://doi.org/10.1016/j.materresbull.2015.10.006
https://doi.org/10.1016/j.materresbull.2015.10.006
Autor:
Kbr Varma, P. W. Jaschin
Publikováno v:
Journal of Non-Crystalline Solids. 434:41-52
Nano-crystals of LiNbxTa1 (-) O-x(3) were evolved by subjecting melt-quenched 1.5Li(2)O-2B(2)O(3)-xNb(2)O(5)-(1 - x)Ta2O5 glasses (where x = 0, 0.25, 0.5, 0.75 and 1.00) to a controlled 3-h isothermal heat treatment between 530 and 560 degrees C. Det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efaf3255863fca0f0c3929cfebad6a8c
https://doi.org/10.1016/j.jnoncrysol.2015.12.012
https://doi.org/10.1016/j.jnoncrysol.2015.12.012