How can you determine the space group from the given x-ray data?

If we have a new sample and we do not know its space group than how we can determine or confirm its xrd pattern (2theta vs intensity) .

02 March 2014 2,368 12 View

Should we consider the purity of the chemical metal basis in our calculations?

Can we get impurity phases due to chemical that is 99.9 percent pure since they are not 100 percent pure?

31 December 2013 5,393 2 View

What are the possible problems involved when using CaCO3 and BaCO3 while doing a solid state reaction?

My compound shows some extra phases other than the product, so it is due to the amount of Ca or Ba in their carbonates.

11 December 2013 5,896 6 View

What is the best way to make a slide for powder x-ray diffraction?

I just want to know whether we can get good XRD data in less time by making our slide better. One way to get good data is to make the powder as fine and uniform as possible. What other parameters...

11 December 2013 9,949 5 View

What is the best way to find out the probability of any new compound that will be formed by any solid state reactions?

Like if I need to make ABCO3, here A, B, C are any metal and O is oxygen, now if i fulfil the charge constrain, now on what basis i will have the surety whether the compound will be formed or not?

10 November 2013 7,291 5 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View