A
Ashok Kumar
Researcher at Council of Scientific and Industrial Research
Publications - 173
Citations - 4289
Ashok Kumar is an academic researcher from Council of Scientific and Industrial Research. The author has contributed to research in topics: Ferroelectricity & Dielectric. The author has an hindex of 31, co-authored 173 publications receiving 3534 citations. Previous affiliations of Ashok Kumar include National Physical Laboratory & University of Puerto Rico, Río Piedras.
Papers
More filters
Journal ArticleDOI
Switching ferroelectric domain configurations using both electric and magnetic fields in Pb(Zr,Ti)O3-Pb(Fe,Ta)O3 single-crystal lamellae.
Donald M. Evans,A. Schilling,Ashok Kumar,Dilsom A. Sanchez,Nora Ortega,Ram S. Katiyar,James F. Scott,J. M. Gregg +7 more
TL;DR: The extent to which magnetic fields alter the ferroelectric domains was found to be strongly history dependent: after switching had been induced by applying electric fields, the susceptibility of the domains to change under a magnetic field was large and resulted in a remanent domain state very similar to the remanent state induced by an electric field.
Journal ArticleDOI
Photoconductivity and photo-detection response of multiferroic bismuth iron oxide
TL;DR: In this article, visible light detection with in-plane BiFeO3 (BFO) thin films grown on pre-patterned inter-digital electrodes was reported. But the effect of light does not significantly increase the dark current, probably due to reduced mobility.
Journal ArticleDOI
A novel method to determine the acoustic impedance of membrane material
TL;DR: In this paper, a new method for the determination of acoustic impedance of a material present in the form of a membrane is proposed based on the measurement of magnitudes at two different frequencies in the frequency spectra of double through-transmission signals with and without the membrane.
Journal ArticleDOI
Electro-mechanical properties of free standing micro- and nano-scale polymer-ceramic composites for energy density capacitors
Paritosh Singh,Paritosh Singh,Hitesh Borkar,Hitesh Borkar,Bhanu Pratap Singh,V.N. Singh,Ashok Kumar,Ashok Kumar +7 more
TL;DR: In this paper, the authors reported the fabrication and characterization of polyvinylidene fluoride-CoFe2O4 (PVDF-CFO) (wt% 80:20, respectively).
Journal ArticleDOI
A quaternary lead based perovskite structured materials with diffuse phase transition behavior
TL;DR: In this article, a lead-based quaternary compound composed of 0.25(PbZr{sub 0.52}Ti, sub 0.48}O{sub 3}) + 0.5(PzT-PFT-PFW-PFNb{sub 1.5}Nb, sub 1.65.