International Journal of Innovative Research in Physics (IJIIP)
(ISSN Number(Online) - 2687-7902)
(ISSN Number(Print) - 2689-484X)

Volume3 Issue4:

Dielectric and Electric Modulus Study of Y0.85Gd0.15CrO3 Nanoparticles

Ranjita Sinha1*,Sandip Haldar1,Soujanya Sengupta2, Monalisa Halder3,Piyali Saren4,Chandan Kumar Raul5, Soumen Basu5 , Ajit Kumar Meikap5
1Department of BS&HU(Physics), Asansol Engineering College, Asansol-713305, India
2 4th year B.Tech Student, Department of Electronics and Communication Engineering, Asansol Engineering College, Asansol-713305, India.
3Department of Basic Science and Humanities, Abacus Institute of Engineering and Management, Mogra-712148, India
41st year Diploma Student, Department of Computer Science and Technology, Abacus Institute of Engineering and Management, Mogra-712148, India
5Department of Physics, National Institute of Technology, Durgapur-713209, India

Email: [email protected]
Page Number: 1-8

In this research work Y0.85Gd0.15CrO3 nanoparticles are synthesized following sol-gel method. Characterization is done by XRD, TEM measurements. XRD pattern proves the well crystalline characteristics and TEM image gives the nanocrystalline nature. Frequency dependence of the dielectric permittivity is estimated for different temperatures in the span of 20 Hz to 2 MHz. The dielectric relaxation spectra using electric modulus formalism is analysed for the sample. Following the electric modulus formalism relaxation time is calculated. Ac activation is also calculated by applying Arrhenius law. The M///M//max vs frequency graph for different temperatures shows that all dynamical process taking place for individual temperatures have same activation energy.

Keywords: Sol-gel method, Dielectric permittivity, Nanoparticles.


Modeling a Global View on Nuclear Fuel Leasing, Recycling, and Proliferation

Aniket Hazra1 , Soumadip Saha2
1Department of CSE(AI), Institute of Engineering and Management, Kolkata-700091
2Department of CSE(AI), Institute of Engineering and Management, Kolkata-700091
Page Number: 1-11

The model was used to study fuel leasing possibilities after a system dynamics model was built to simulate fuel cycle interactions between two different nuclear organisations. The model was also used to assess the proliferation and economic consequences of a global leasing policy. An open fuel cycle results in large spent-fuel buildup in a nuclear expansion scenario. The leased fuel cycle, when combined with enhanced security and safety technologies, has the ability to alleviate proliferation concerns in a closed fuel cycle.

Keywords: fuel, dynamics, proliferation, nuclear


Observation of Electrical, Dielectric and Magneto-dielectric Properties of Terbium Doped Bismuth Ferrite Nanoparticles above Room Temperature

Monalisa Halder1*,Jinia Datta2,Raja Mallick3, Ranjita Sinha4,Khusi Smriti5,Chandan Kumar Raul6,Shubhadip Atta6 and Ajit Kumar Meikap
1Department of Basic Science and Humanities, Abacus Institute of Engineering and Management,Mogra, Hooghly, India-712148
2Principal-in-Charge, Abacus Institute of Engineering and Management, Mogra, Hooghly, India-712148
3 2nd Year B.Tech. Student, Department of Electronics & Communication Engineering, Abacus Institute of Engineering and Management, Mogra, Hooghly, India-712148
4Department of BS&HU (Physics), Asansol Engineering College, Kanyapur, Asansol, India-713305
52nd Year B.Tech. Student, Department of Information Technology, Asansol Engineering College, Kanyapur, Asansol, India-713305
6Department of Physics, National Institute of Technology, Durgapur, India-713209
*Corresponding author: [email protected]
Page Number: 1-5

The effect of rare earth transition metal (Tb) ions doping in A site of bismuth ferrite (BFO) nanoparticles are studied from electrical, dielectric and magneto-dielectric aspects. A detailed study on dielectric properties of the Tb doped bismuth ferrite nanoparticles is done over a wide temperature range in a frequency range of 20 Hz - 2 MHz. Observation on magneto-dielectric response of the sample is done at room temperature upon applying external transverse magnetic field.

Keywords: Bismuth ferrite, Electrical measurements, Electric modulus spectroscopy, Magneto-dielectric response

Evaluation of Richardson Constant of Fruit dyes using Carmoisine and Tartrazine

Arnab Kanti Karan1*,Dipankar Sahoo1,Sudipta Sen1,N. B. Manik1
1Condensed Matter Physics Research Center, Department of Physics Jadavpur University, Kolkata -700032, India
Email of the corresponding author:[email protected]
Page Number: 1-7

One of the most crucial variables to consider while analysing the current conduction process in the metal organic Schottky contact is the Richardson constant. However, there aren't many publications on the determination of the useful Richardson constant for Fruit dyes. For two different Fruit dyes, Carmoisine, and Tartrazine, we have determined the values of the effective Richardson constant in this work. By using the spin coating method, a thin organic layer of these natural colours was sandwiched between a copper plate and a piece of glass that had been coated in indium tin oxide. The current-voltage-temperature response of the cells was examined at a temperature range of 303K to 333K. The estimated effective Richardson constants for these dyes are 95.09 x 10-3 A/cm2K2 and 44.35 x 10-3 A/cm2K2 for CS and TZ dye respectively, which are different from the typical value of 120 A/cm2K2. We can analyse several electrical properties for these natural dyes with the aid of these values.

Keywords: Natural dye, Schottky contact, Richardson constant.


Electronic and Microscopic Properties of Spin ½ System, CuInO(VO4)

Dilruba Khanam1, Asif Iqbal1, and Badiur Rahaman1*
1Department of Physics, Aliah University, Kolkata-700160
Email: [email protected]
Page Number: 1-7

We present first principles density functional theory (DFT) calculations within the generalized gradient approximation for the exchange-correlation functional in order to gain microscopic understanding, electronic and microscopic properties of CuInO(VO4). We discuss explicitly the electronic properties, nature of the exchange paths and estimate magnetic exchange interactions. Focusing on the calculated magnetic interactions and electronic structure of CuInO(VO4) puts it in the class of weakly coupled low dimensional antiferromagnetic tetramer with spin S=1/2.

Keywords:Electronic Structure, Magnetic Exchange Interaction, Wannier Function, Microscopic Modelling