Bipul Deka

9 Questions 8 Answers 0 Followers

Questions related from Bipul Deka

How to use constraint in Rietveld refinement?

I am working on spinel ferrites (AB2O4). Since cations in spinels can occupy both tetrahedral and octhedral sites, I need to find out the amount of cations occupying the tetrahedral and octahedral...

29 June 2020 3,795 1 View

How to use more than one instrument driver in a single labVIEW task to measure input vs output curve?

I am trying to measure magnetostrictive strain as a function of applied DC magnetic field. For this, I am using NI9237 module sitting on a chassis for strain measurement, and a lakeshore 425...

30 January 2020 2,998 3 View

How is the magnetoelectric current measured?

Measurement of magnetoelectric current (density) seems to be very popular to investigate the magneto-electric response of multiferroics. It'll be grateful to know how it is measured and about the...

12 June 2019 5,968 1 View

What is the reason for downward shifting of Z" peak towards lower frequencies with increase in temperature for PTCR ceramics?

Generally, the relaxation dynamics can be well explained in terms of Arrhenius law (or sometime the Vogel-Fulcher law), which explains the shift of Z" peak frequencies towards higher frequencies...

02 February 2017 1,962 0 View

How the value of surface layer (skin) capacitance of a crystal differs from that of grain boundaries and grains?

It is reported that several important pervoskites like SrTiO3, BaTiO3 have surface layers that are structurally different from the interior of crystal. Further, it can show transition similar to...

26 August 2016 1,134 7 View

What is the need of KWW function to study electric modulus?

It is well known that electric modulus can be calculated from complex dielectric constant. The most general equation to explain the frequency dependence of complex dielectric constant is the HN...

10 August 2016 195 1 View

Can the loss peak shift towards the lower frequency side with increase in temperatutre?

I have measured the frequency variation of Z" at different temperature above the room temperature and observed a peak in Z" spectrum. Generally, frequency corresponding to the maximum of Z" i.e.,...

01 June 2016 9,244 2 View

Querry abour minor loop?

Let us consider a magnetic system containing AFM and FM interface, that is able to exhibit exchange bias, and we need to check for exchange bias recording M-H loops as discussed in many...

18 March 2016 8,805 1 View

Can loss tangent have very high values such as 1000-2000?

I have measured frequency dependent dielectric properties in orthoferrites at different temperature from RT - 300 C. The real and imaginary part of dielectric constant was determined using the...

15 February 2016 3,935 6 View