Parveen Kumar - Academia.edu (original) (raw)
Related Authors
Umm Al-Qura University, Makkah, Saudi Arabia
Uploads
Papers by Parveen Kumar
Applied Physics Letters, 2000
We report structural, dielectric, and ferroelectric properties of compositionally graded (Pb,La)T... more We report structural, dielectric, and ferroelectric properties of compositionally graded (Pb,La)TiO3 thin films on LaNiO3/SiO2/Si substrates, where all the films were prepared by the sol-gel technique. The crystalline orientation and surface morphology of the graded films were closely related to the deposition sequence of film layer. Upgraded film exhibited (100) preferentially oriented growth, whereas downgraded film showed a randomly oriented growth, where the films with La content increasing or decreasing gradually along film thickness from the substrate to the top surface are called “upgraded” or “downgraded” films, respectively. The dielectric constants, for upgraded and downgraded films annealed at 650 °C for 60 min, were found to be 659 and 641, respectively. The thin films had large polarization offsets in hysteresis loops when driven by an alternating electric field. The magnitude of the offsets displayed a power law dependence on the electric field, and the direction of th...
International Journal of Scientific Research, 2012
The present study is divided into two parts. The first part pertains to the theoretical aspect co... more The present study is divided into two parts. The first part pertains to the theoretical aspect covering the constitutional 73rd amendment which paved the way for the establishment of the Panchayati Raj Institutions as bodies of local self government and the Jammu and Kashmir Panchayati Raj Act 1989 which provides for the establishment of Panchayats at the state level. The second part relates to the empirical findings of the study like the electoral process, socioeconomic back ground of the elected leaders, the percentage of women elected, awareness of the elected leaders towards the different provisions of the act and the constraint faced by them while discharging their duties. The study was conducted in September-October 2011 in seven randomly selected Panchayats from four Blocks of District Jammu of state of Jammu and Kashmir. The results of the study reveal that one third of the elected representatives were women, thirty two percent of the total respondents were from the weaker sections and more than seventy percent of the respondents were below 50 years of age. Among the constraints majority of the respondents regarded lack of cooperation from Village level worker and lack of monetary assistance in the form of salary as the main constraints they face in performing their functions effectively.
Applied Physics Letters, 2000
We report structural, dielectric, and ferroelectric properties of compositionally graded (Pb,La)T... more We report structural, dielectric, and ferroelectric properties of compositionally graded (Pb,La)TiO3 thin films on LaNiO3/SiO2/Si substrates, where all the films were prepared by the sol-gel technique. The crystalline orientation and surface morphology of the graded films were closely related to the deposition sequence of film layer. Upgraded film exhibited (100) preferentially oriented growth, whereas downgraded film showed a randomly oriented growth, where the films with La content increasing or decreasing gradually along film thickness from the substrate to the top surface are called “upgraded” or “downgraded” films, respectively. The dielectric constants, for upgraded and downgraded films annealed at 650 °C for 60 min, were found to be 659 and 641, respectively. The thin films had large polarization offsets in hysteresis loops when driven by an alternating electric field. The magnitude of the offsets displayed a power law dependence on the electric field, and the direction of th...
International Journal of Scientific Research, 2012
The present study is divided into two parts. The first part pertains to the theoretical aspect co... more The present study is divided into two parts. The first part pertains to the theoretical aspect covering the constitutional 73rd amendment which paved the way for the establishment of the Panchayati Raj Institutions as bodies of local self government and the Jammu and Kashmir Panchayati Raj Act 1989 which provides for the establishment of Panchayats at the state level. The second part relates to the empirical findings of the study like the electoral process, socioeconomic back ground of the elected leaders, the percentage of women elected, awareness of the elected leaders towards the different provisions of the act and the constraint faced by them while discharging their duties. The study was conducted in September-October 2011 in seven randomly selected Panchayats from four Blocks of District Jammu of state of Jammu and Kashmir. The results of the study reveal that one third of the elected representatives were women, thirty two percent of the total respondents were from the weaker sections and more than seventy percent of the respondents were below 50 years of age. Among the constraints majority of the respondents regarded lack of cooperation from Village level worker and lack of monetary assistance in the form of salary as the main constraints they face in performing their functions effectively.