Crystallography

The branch of science that deals with the geometric description of crystals and their internal arrangement. (McGraw-Hill Dictionary of Scientific... | Contact experts in Crystallography to get answers

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Questions related to Crystallography

Is there any correlation between crystallographic orientation and Taylor factor, in a rolled sheet?

The Taylor factor analyses can predict the yield response of a grain to the induced stress state, based on the family of active slip systems. Taylor factor is used to analyze the level of plastic...

03 March 2016 8,810 4 View

How can I measure the difference between two misorientations (i.e. two transformation matrices)?

I have the orientations of two crystals; a parent austenite and daughter martensite. My aim is to measure the difference between their orientation relationship and the ideal K-S orientation...

03 March 2016 6,654 1 View

How can I trace the dislocation motion on slip planes during plastic deformation by crystallographic texture evolutions? (in BCC structure)

Crystallographic texture

03 March 2016 6,297 6 View

How can I calculate the tolerance factor for double perovskites?

We know that the tolerance factor t is generally represented: t = (rA+rO) / [sqrt(2)*(rB+rO)] where r is the ionic radius for the perovskite ABO3. But for the double perovskites A2B'B''O6, how to...

03 March 2016 5,995 4 View

Why albite is described by space group C-1 (space group number 2)?

The space group symmetry of the feldspar mineral albite is (typically) described in databases by the Hermann-Mauguin symbol C-1, although a view in the International Tables for Crystallography...

03 March 2016 10,016 23 View

What factor decide intensity profile in crystallographic analysis using fullprof software?

I am using fullprof software to analyse peaks profile of sio2. but I am getting intensity profile error check your instr parameter.

03 March 2016 7,235 5 View

How to solve the structure of a complex in crystallography?

Hi, What strategies are there to solve structure of a complex containing several proteins using molecular replacement if there is no structure for the complete complex? Thanks

23 February 2016 2,714 3 View

What is Mathew's Coefficient?

Hi,  Crystallography question: What exactly is the information that is obtained from Mathew's Coefficient and in what stage do I need to use it? What happens if I enter a wrong Mathew's...

02 February 2016 4,412 0 View

How to solve the structure of a complex in crystallography?

Hi, What strategies are there to solve structure of a complex containing several proteins using molecular replacement if there is no structure for the complete complex? Thanks

02 February 2016 1,422 3 View

Crystallography and asymmetric unit?

Hi, If my solved structure is a dimer in an asymmetric unit, are the two molecules correlated by crystallographic rotational symmetry? I think not, but have problem explaining it. I would be...

02 February 2016 2,868 2 View

How to crystallize product that crash out from an aqueous solution?

I run my reaction in water and leave it for slow evaporation. The product crashed out after a week, which are not suitable for X-ray crystallography. I have tried to dilute the product and slowly...

02 February 2016 970 3 View

Why the same mineral has different d-spacing values with in the same sample. As in case of mineral quartz, it has 1.181 and 3.344 Angstrom ?

Why the same mineral has different d-spacing values with in the same sample. As in case of mineral quartz, it has 1.181 and 3.344 Angstrom ?

02 February 2016 4,199 2 View

¿Does anyone Knows about any software that could compare the same asymmetric crystallographic unit and unit cells at different temperatures?

¿Does anyone Knows about any software that could compare the same asymmetric crystallographic unit and unit cells at different temperatures?

02 February 2016 4,915 7 View

How to find the angle between planes of two different structures in Vesta Software?

I am trying to find the angle between two lattice planes of two different structures( one on top of the other) in Vesta software. Although there is an option in the software to find the the angles...

02 February 2016 4,223 2 View

Can I use virtual crystal approximation within DFT (CASTEP) to dope any system for small doping concentration like 1% to 5%?

http://journals.aps.org/prb/abstract/10.1103/PhysRevB.61.7877

02 February 2016 4,213 9 View

Interview level questions about Solid state physics and quantum mechanics ?

Respected all, Please tell me the what type of questions they will ask in interview about basics in solid state physics and quantum physics (basic level)? crystallography, properties, graphs,...

02 February 2016 4,093 4 View

Where can I find the structure of the zirconium silicate calcium , to be inserted inside GSAS?

I need to find the file .CIF of this phase  : (Ca2Si4ZrO12) Can someone help me? how can make this kind of file? Thanks in advance at aLL..

02 February 2016 9,594 2 View

How can i obtain the 6×6 symmetric matrix of elastic constants from CIF file?

I am very interested in the study of MOF compounds at high pressure. I would like to enhance my work on the theoretical calculations about the elastic tensors but i have no clue how to do this. I...

02 February 2016 5,236 4 View

What is the difference between crystallized and crystalline when studying how minerals are formed?

 im confused based on the appearance and how i can easily identify the mineral

02 February 2016 8,350 3 View

Can anybody tell me how to calculate site occupancy factors for atoms in Ca3LiRuO6 for Rietveld refinement in full prof?

space group R-3c (No. 167)

05 January 2016 6,788 2 View

What is the proper method that can help to improve crystal diffraction from 5 Angstrom to 1.2 ?

is there is any method i could follow to get high diffraction resolution rather than dehydration? thanks in advance :)  

01 January 2016 9,970 4 View

What are the possible forms of sodium chloride crystals?

NaCl is cubic and crystallizes, from its solution in water, in form of cubes {100}. The crystal form can depend on additives, and if the water contains urea, one obtaines octahedra {111}. I'm...

01 January 2016 8,084 4 View

Which protein has got the maximum number of crystal structures in PDB?

What are the proteins most studied by crystallography or NMR? I think it's lysozyme, which has more than 1500 entries in PDB. There are 721 entries for hemoglobin and 574 for HIV-1 protease. What...

01 January 2016 1,853 3 View

How to determine active slip systems while slip traces were wavy?

For BCC  materials, cross slip occoured very often,leaving wavy slip traces on the surface of specimen.How to determine active slip systerms while slip traces were wavy?

01 January 2016 3,765 0 View

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