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thola
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How do you calculate lattice parameters c and a of Hexagonal ZnO ? if you are given the wavelength= 1.5406 nm, diffraction angle= 48 and the miller indexes (102)
thola said:How do you calculate lattice parameters c and a of Hexagonal ZnO ? if you are given the wavelength= 1.5406 nm, diffraction angle= 48 and the miller indexes (102)
read said:Bragg low: 2*d*sin(theta)=lambda
distance in reciprocal space (1/d)^2=(h^2+k^2+h*k)*A^2+l*C^2, where A and C reciprocal basis vectors, A=a*2/sqrt(3), C=1/c.
read said:Sorry, A=(1/a)*2/sqrt(3), of course.
theivasanthi said:It is said that; 1) if a and c are known, it is possible to calculate the peak position (Theta is the half value of the peak position) 2) if the peak position is known it is possible to calculate the lattice parameter.
How do I calculate the lattice parameters (a,b,c) from hkl ( miller indices) of XRD pattern? or How do I calculate a,b,c from peak position? How do I calculate a,b,c from any other method?
theivasanthi said:Dear Read,
I have XRD pattern of Jackfruit powder. There are 5 peaks in that XRD. I have calculated d(h,k,l) and \theta for each h,k,l. I do not know structure whether it is fcc or bcc or hexagonal etc. Now, How do I calculate a,b,c? Is there any method or equations to calculate a,b,c for an unknown structure?
T.Theivasanthi.
The lattice parameter c of Hexagonal ZnO can be determined by using X-ray diffraction (XRD) techniques. XRD involves exposing a crystal to X-rays and measuring the angles at which the X-rays are diffracted. These measurements can then be used to calculate the lattice parameters of the crystal.
The lattice parameters c and a are important in determining the crystal structure and properties of Hexagonal ZnO. These parameters can provide information about the arrangement of atoms in the crystal lattice and can affect the physical, chemical, and electronic properties of the material.
Yes, the lattice parameters c and a can be calculated using the following formula: c = (2/3)*sqrt(3)*dhkl and a = dhkl, where dhkl is the interplanar spacing and (hkl) represents the Miller indices of the crystal planes.
Yes, the lattice parameters c and a can also be measured using techniques such as transmission electron microscopy (TEM) and scanning electron microscopy (SEM). These techniques involve imaging the crystal structure at a nanoscale level and can provide accurate measurements of the lattice parameters.
Defects or impurities in the crystal lattice of Hexagonal ZnO can cause distortions in the crystal structure, resulting in changes in the lattice parameters c and a. This can affect the properties of the material, such as its conductivity and mechanical strength, and can also impact the performance of devices made from Hexagonal ZnO.