Particles with 400nm size but XRD analysis shows high intensity of peaks up to (140000), is that normal? Must i worry?
Please post the pattern and tell us what the material is. High intensity may mean that you have high contrast materials (gold, for example) or if you've measured a powder then you have much larger fused particles (in the micron plus region) with the crystal planes oriented in the 'right way' for high intensity. How do you determine that the size is 400 nm? Electron microscopy?
Hi
High intensity doesnt related much with particle size. Peak width is mainy depends on size of particle... So no worry about.
Best
Arunprakash Vincent
Hallo, Thank you for your answers, here the XRD pattern, the sample is a mixture between Cu and Cu2O, and yes SEM image show fine particles of about 400nm.
Thank you
i remember i did not sift the powder before XRD analysis but i did that before SEM analysis.
You have a fused collection of post- and sub-micron material as is standard for small primary sized powders. There are no free, discrete, independent particles < 100 nm. The fact that this is Cu and Cu2O tells you that there will be high attenuation in such systems (and thus high intensity diffraction) possibly with the crystal planes aligning favorably.
Dear Pr Rawle,
Thank you for your explanation, i will use it.
Sincerely
My other suggestion for a measurement would be specific surface area by BET.
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