XRD sin2Psi stress measurment. Why Sin2Psi=0 value does not match linear d-spacing behaviour?

I have made XRD stress measurements on several >12µm thick TiN-films on steel substrates. I used Sin2Psi-method in Bragg-Brentano geometry on the (111)-peak of cubic TiN, which gives a good...

01 April 2019 9,467 5 View