Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Ujjal Chowdhury"'
Autor:
Sudipta Goswami, Koushik Dey, Supriyo Chakraborty, Saurav Giri, Ujjal Chowdhury, Dipten Bhattacharya
Publikováno v:
ACS Omega, Vol 5, Iss 36, Pp 22883-22890 (2020)
Externí odkaz:
https://doaj.org/article/ebdefbd2472747dcbfa3136e379ad06f
Autor:
Shubhankar Mishra, Koushik Dey, Ujjal Chowdhury, Dipten Bhattacharya, Chandan K. Ghosh, Saurav Giri
Publikováno v:
AIP Advances, Vol 7, Iss 12, Pp 125015-125015-7 (2017)
We report observation of finite remanent polarization (∼10-80 nC/cm2) and reasonably strong magnetoelectric coupling in thin film of Fe3O4 within a temperature range from ∼40 K to Verwey transition temperature TCO ∼120 K. Both the intrinsic cap
Externí odkaz:
https://doaj.org/article/67c772bfafe642d0abe5237637cd55ce
Autor:
Amrita Chakravarty, Ujjal Chowdhury, Dipten Bhattacharya, Sampad Kumar Biswas, Ravindra Singh
Publikováno v:
Materials Letters. 215:144-147
Analysis of the temperature dependence of electrical conductivities of aluminum nitride (AlN)-single walled carbon nanotube (SWCNT) ceramic nanocomposite containing 1, 3 and 6 vol% SWCNT has been reported in this communication. A conductivity as high
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e05cbbaf90f705d27b4aaec63e54ee3
https://doi.org/10.1016/j.matlet.2017.12.071
https://doi.org/10.1016/j.matlet.2017.12.071
Autor:
S Roy, Amrita Chakravarty, Ujjal Chowdhury, Sumantra Basu, Sampad Kumar Biswas, Ravindra Singh
Publikováno v:
Journal of the American Ceramic Society. 100:3360-3364
Development of Aluminum Nitride (AlN) – Single Walled Carbon Nanotube (SWCNT) ceramic-matrix composite containing 1 to 6 vol% SWCNT by hot pressing has been reported in this article. The composites containing 6 vol% SWCNT are dense (~99% Relative D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a53b0c5031cc87721792e3df77d5235
https://doi.org/10.1111/jace.14992
https://doi.org/10.1111/jace.14992
Publikováno v:
Ceramics International. 42:14944-14948
The field of solid state gas sensing is dominated by metal oxide semiconductors, whose modality of detecting volatiles is primarily governed by the chemisorption kinetics of the surface dwelling oxygen adatoms. The performance of these sensors is thu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c7f0a645f18f6411bb96c5fbe292643
https://doi.org/10.1016/j.ceramint.2016.06.135
https://doi.org/10.1016/j.ceramint.2016.06.135
Publikováno v:
Micro & Nano Letters. 10:109-114
Barium titanate (BaTiO3) is a well-known ferroelectric material and widely used in electronic industries for the multi-layer ceramic capacitor. In this reported work, commercially available tetragonal BaTiO3 (BT) powders were taken to study the size
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9de4f9516f4edcdaf10213deda585931
https://doi.org/10.1049/mnl.2013.0751
https://doi.org/10.1049/mnl.2013.0751
Autor:
S. D. Kaushik, S. Israel, Vasudeva Siruguri, Anatoliy Senyshyn, James F. Scott, R. Saravanan, Ujjal Chowdhury, Ashish Kumar Mall, S. Saravanakumar, Sudipta Goswami, Tapan Chatterji, Ashish Garg, Dipten Bhattacharya, Amritendu Roy, Shailendra Rajput, Ramchandra Gupta
We demonstrate that small but finite ferroelectric polarization ($\sim$0.01 $\mu$C/cm$^2$) emerges in orthorhombic LuFeO$_3$ ($Pnma$) at $T_N$ ($\sim$600 K) because of commensurate (k = 0) and collinear magnetic structure. The synchrotron x-ray and n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50eed5ff3ee3d00dab61a07480f118c2
http://arxiv.org/abs/1710.02381
http://arxiv.org/abs/1710.02381
Autor:
Chandan Kumar Ghosh, Saurav Giri, Dipten Bhattacharya, Shubhankar Mishra, K. Dey, Ujjal Chowdhury
Publikováno v:
AIP Advances, Vol 7, Iss 12, Pp 125015-125015-7 (2017)
We report observation of finite remanent polarization (∼10-80 nC/cm2) and reasonably strong magnetoelectric coupling in thin film of Fe3O4 within a temperature range from ∼40 K to Verwey transition temperature TCO ∼120 K. Both the intrinsic cap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6a801906f3ceceadaf27abf47a5c23b
https://doi.org/10.1063/1.5011119
https://doi.org/10.1063/1.5011119
From the measurement of dielectric, ferroelectric, and magnetic properties we observe simultaneous ferroelectric and magnetic transitions around $\sim$600 K in orthorhombic LuFeO$_3$. We also observe suppression of the remanent polarization by $\sim$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f9e47ff275bfe6a1e9b26ac53363242
Publikováno v:
Applied Physics Letters. 109:092902
We measured the intrinsic hysteretic polarization in lossy improper and nanoferroelectric systems where the nonhysteretic polarization and leakage are large and the relaxation takes place over a broader time scale. We used different measurement proto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0831fb6fb0acb0407ba52eaa3728643
https://doi.org/10.1063/1.4961988
https://doi.org/10.1063/1.4961988