Zobrazeno 1 - 10
of 154
pro vyhledávání: '"V.N. Ojha"'
Publikováno v:
Sensors and Actuators A: Physical. 295:133-140
We report moisture sensitive properties of ferroelectric niobium-rich potassium tantalate K T a 0.2 N b 0.8 0.99 M n 0.01 O 3 (KTN) which shows giant humidity response with excellent reproducibility and repeatability of data as a function of exposure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47bbc0f4e70ba0d98d5b8fc068975cf8
https://doi.org/10.1016/j.sna.2019.05.023
https://doi.org/10.1016/j.sna.2019.05.023
Autor:
Christopher R. Bowen, Ravikant, Ashok Kumar, Gaurav Vats, Dhiren K. Pradhan, V.N. Ojha, Shalini Kumari, Ram S. Katiyar
Publikováno v:
Vats, G, Ravikant, Kumari, S, Pradhan, D, Katiyar, R, Ojha, V N, Bowen, C & Kumar, A 2019, ' Magnetocaloric effect and piezoresponse of engineered ferroelectric-ferromagnetic heterostructures ', Journal of Magnetism and Magnetic Materials, vol. 473, pp. 511-516 . https://doi.org/10.1016/j.jmmm.2018.10.024
This study reports the magnetocaloric effect (MCE) and piezoresponse of integrated ferroelectric-ferromagnetic heterostructures of PbZr 0.52Ti 0.48O 3 (PZT) (5 nm)/Bi-Sr-Ca-Cu 2-O X (BSCCO) (5 nm)/La 0.67Sr 0.33MnO 3 (LSMO) (40 nm)/MgO (0 0 1). Magne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74727d89c70a926ed57a3566a32f5eb1
https://doi.org/10.1016/j.jmmm.2018.10.024
https://doi.org/10.1016/j.jmmm.2018.10.024
Publikováno v:
Vacuum. 159:464-467
We report successful synthesis of superconducting Bi Sr Ca Cu2-OX (BSCCO) target for fabrication of heterostructure thin films. For the first time, we have grown LSMO (50 nm)/PZT (5 nm)/BSCCO (100 nm)/LAO (100) heterostructure by pulsed laser deposit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fc0353167f87529aaac14f6b635177e
https://doi.org/10.1016/j.vacuum.2018.10.076
https://doi.org/10.1016/j.vacuum.2018.10.076
Publikováno v:
Journal of Magnetism and Magnetic Materials. 527:167753
Tuning of superconducting phase transition temperature (Ts) and interfacial magnetism is of great technological importance for micro and nanoelectronics. To achieve the cherished goal, an ultra-thin layer (4 nm, 6 nm, 8 nm 10 nm) of ferroelectrics Pb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5c9140d49f88a7e33beedfced372eb7
https://doi.org/10.1016/j.jmmm.2021.167753
https://doi.org/10.1016/j.jmmm.2021.167753
Autor:
Ravikant, Ram Janay Choudhary, V. R. Reddy, Charanjeet Singh, Ashok Kumar, Manju Singh, R. K. Rakshit, V.N. Ojha, Anjali Panchwanee
Publikováno v:
AIP Advances, Vol 10, Iss 7, Pp 075206-075206-6 (2020)
We report the growth and polarization switching properties of epitaxial ferroelectric–superconducting heterostructure PbZr0.52Ti0.48O3 (PZT) (100 nm)/YBa2Cu3O7−δ (YBCO) (100 nm) thin films for non-volatile ferroelectric random access memory elem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a15c4d75886fcd3be0c8f82ad6a05ce7
https://doaj.org/article/cb731e16a7894809aef87a2fe07dce8b
https://doaj.org/article/cb731e16a7894809aef87a2fe07dce8b
Publikováno v:
Materials Research Express. 7:046302
We report the effect of humidity and temperature on the dielectric and impedance properties of lead-free potassium tantalum niobium oxide (KTN). It illustrates large dielectric constant ∼4500 at 1 kHz, low tangent loss in dry condition, which drast
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f80fa5c041b506914199593b172d6ff2
https://doi.org/10.1088/2053-1591/ab8587
https://doi.org/10.1088/2053-1591/ab8587
Publikováno v:
Urban Climate. 29:100485
PM2.5 samples were collected on day time and night-time basis at an urban and a rural site in Delhi region. A total of 11 Polycyclic Aromatic Hydrocarbons (PAHs) were identified and analyzed for urban and rural sites on day time and night time basis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b13483e314768082f2d82ba9a9c174fb
https://doi.org/10.1016/j.uclim.2019.100485
https://doi.org/10.1016/j.uclim.2019.100485
Publikováno v:
EPL (Europhysics Letters). 122:57002
We report the tunneling current behavior of magnetic-ferroelectric-superconducting heterostructures for multistates non-volatile random access memory (NVRAM) elements. A heterostructure of La0.67 Sr0.33 MnO3 (LSMO) (50 nm)/PbZr0.52 Ti0.48 O3 (PZT) (5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b731d9bccfa93f1435cb9dd280956a1d
https://doi.org/10.1209/0295-5075/122/57002
https://doi.org/10.1209/0295-5075/122/57002
Autor:
V.N. Ojha, A.K. Gupta
Publikováno v:
1998 Conference on Precision Electromagnetic Measurements Digest (Cat. No.98CH36254).
A voltage standard system based an the Josephson series array to represent the volt at National Physical Laboratory (NPL), India has been recently established. This paper describes the measurement set up at 1 volt level and the results that has been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e07fc01a40a0368694443af0f222f2c5
https://doi.org/10.1109/cpem.1998.700054
https://doi.org/10.1109/cpem.1998.700054
Publikováno v:
1998 Conference on Precision Electromagnetic Measurements Digest (Cat. No.98CH36254).
A maximum step voltage test of two 1-V Josepshon junction arrays fabricated at different places were performed. Maximum zero-crossing voltages, frequency of the millimeter waves, and their power are measured. These items are demonstrated to be useful
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a084b492a604304307f5e5b1dd54d6e
https://doi.org/10.1109/cpem.1998.699994
https://doi.org/10.1109/cpem.1998.699994