- #1

- 31

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Good afternoon,

I am analyzing a diffraction diagram (XRD) corresponding to a powder diffraction experiment , and I have obtained a negative slope value when plotting ##\left(\beta_{exp}-\beta_{inst}\right)\cos\theta## vs ##\sin\theta##.

This implies that the strain coefficient is negative for the material. However, I don't quite understand how to interpret the result. In principle, inhomogeneous voltages should contribute to a broadening of the diffraction peak, but in this case it is as if the opposite were happening, that is, the diffraction peak is narrowing due to the effect of the applied strain.

I would be very grateful if you could inform me about whether it is possible to obtain a result of this type, and if so, about how to understand this phenomenon intuitively.

Thank you very much in advance and regards,

I am analyzing a diffraction diagram (XRD) corresponding to a powder diffraction experiment , and I have obtained a negative slope value when plotting ##\left(\beta_{exp}-\beta_{inst}\right)\cos\theta## vs ##\sin\theta##.

This implies that the strain coefficient is negative for the material. However, I don't quite understand how to interpret the result. In principle, inhomogeneous voltages should contribute to a broadening of the diffraction peak, but in this case it is as if the opposite were happening, that is, the diffraction peak is narrowing due to the effect of the applied strain.

I would be very grateful if you could inform me about whether it is possible to obtain a result of this type, and if so, about how to understand this phenomenon intuitively.

Thank you very much in advance and regards,