How to confirm the phase transition from R3c to orthorhombic?

Indoors BiFeO3 has r3c st and with doping it goes to orthorhombic. But the exact orthorhombic structure group is not clear.which is correct r3c to pbnm or r3c to c222. How to check it appropriately.

11 December 2018 8,917 3 View

Anyone here using PE loop tracer system from Marine India?

Please inbox me. I have some queries regarding the instrument. Thank you in advance. Regards Alaka

10 November 2018 4,602 0 View

Can anyone suggest me if the attached result signifies the ferroelectric behaviour ?

I am herewith attaching the PE result (ferroelectric hysteresis) with finite loop area. I need suggestions regarding following 1. As can be seen the loop ahifted to left from origin and some cases...

31 December 2017 9,127 9 View

What is the effect of electrode on the polarization-elelctric field loop (PE loop)?

07 August 2017 4,846 0 View

What will be the effect of impurity on Dielectric properties of semiconductor?

How does the morphology of impurity affects the dielectric properties. The impurity phase is Hematite so can anyone suggest or refer some literature regarding this.

05 June 2017 8,409 8 View

What does it mean when Zero field cooled (ZFC) and field cooled (FC) curve completely merge with each other?

what does the peak observed in ZFC and FC imply? how does it related to spin glass transition? How to confirm the same? Can anyone please suggest me.

05 June 2017 1,413 4 View

Does increase in peak shifting with higher 2 theta angle in XRD logical?

I am observing the shift in peaks in a mixed phase system (2 phases). I observed the peak shifting is more at higher angles i.e if it is 0.2 upto 2 theta =30 degrees which increases to 0.4 towards...

05 June 2017 5,782 16 View

What does the enhancement of intensity of certain peaks in XRD pattern implies?

I am working on Bi2Fe4O9 sample which shows some planes getting enhanced after sintering. The specific planes are (001),(002),(140). Can anyone suggest what it is due to?

04 May 2017 5,684 5 View

Can I use any matrix for PE loop measurement?

31 December 2016 7,891 6 View

Can anyone help me out on analysis of PE loop?

31 December 2016 8,288 0 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

How to simultaneously perform multiple biochemical assays?

I am a research scholar working on heavy metal stress on plants. I will be doing biochemical characterisation( protein, carbohydrate, proline, antioxidant enzymes and many more assays) at interval...

01 March 2021 6,999 3 View

Which transition metal salt precursor is best for doping? Why?

I would like to synthesize a transition metal doped TiO2 via solgel method. Hence, I would like to know which metal salt precursor to choose among Chloride, Nitrate, and Sulphate. A clear...

27 February 2021 4,285 3 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

How to search for crystal structure for material with atomic position labelled?

I am using the crystallographic open database and materials project to search for cif file but the exact structure is not mentioned or how can I deduce that the given structure and atomic position...

23 February 2021 6,723 2 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

What are the potential shell well and atomic solvation parameters for the boron atom?

I have a protein-ligand docking project. The ligand contains boron atoms that are not detected by Autodock software. To solve this problem, it is necessary to introduce the boron atom to...

19 February 2021 1,236 1 View

Is nanotechnology part of materials science? Is it possible to obtain Pico technology and move from hypothesis to application?

Pico-scale This is three orders of magnitude smaller than a nanometer (and thus most nanotechnology) and two orders of magnitude smaller than most chemistry transformations and measurements. Pico...

18 February 2021 4,540 5 View