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XRD d value Calculator

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XRD d value Calculator - InstaNANO. https://instanano.com/all/characterization/xrd/d-value/ (accessed March 28th, 2024).

This calculator can be used to calculate d value by using the peak position (two theta), order of reflection and x-ray wavelength.

Peak Position (2θ)

X-Ray Wavelength

Order of Reflection (n)

Results
nm

Calculation Tutorial:

STEP1: Open the XRD graph of the material, which is obtained from the instrument.

STEP2: Now zoom on the area for which you want to calculate the d value and note down the angle at which peak is shown.

STEP3: Now enter the measured Peak Position (i.e. 31.8 degree) in “Peak Position (2 Theta)” column of the calculator. You should get the calculated results of the d value in the “Calculated Result” field.

NOTE: Default value of wavelength of LASER is set is 0.15418, which is mostly used in the instruments; and Order of Reflection is 1. You can also change these values as your desire if you want.

Theory Behind Calculations:
X-Rays are having wavelength between 0.01nm to 10nm. Hence X-Rays can penetrate inside the crystal structure of any material very easily; and tells us the properties of material while coming out from that material. Which is why X-Ray spectroscopy is very useful technique for characterization of different types of materials.

Bragg’s Law:

Order of Reflection (n) × Wavelength (λ) = 2 × Interplanar spacing (d) × Sinθ

So, Interplanar spacing can be calculated easily from the formula as:

Interplanar spacing (d) = Order of Reflection (n) × Wavelength (λ) / 2 × Sinθ

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HIMADRI DUWARAH says:

What is JCPDS d-spacing value

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