Kun Li

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Questions related from Kun Li

Malayaite pigment sample XRD result refined with maud have both sig over 2 and Rwp (%) over 21, why and ways to fix it ?

Maud refinement problems. Malayaite pigment sample XRD result refined with maud have both sig over 2 and Rwp (%) over 21, why and ways to fix it ？ The problem occured when using Maud software for...

15 April 2025 7,938 4 View

Do α-quartz, β-quartz, α-cristobalite, β-cristobalite and tridymite have the same refractive index, why?

Do α-quartz, β-quartz, α-cristobalite, β-cristobalite and tridymite have the same refractive index, why? Please give the root reason, thanks.

12 April 2020 9,206 0 View

What is the root cause of CdSxSe1-x generating the unique bright red color?

In many articles, I have read the same sentences "CdS1-xSex, the only known ceramic pigment to generate bright red color". Since I used to synthesis CdS1-xSex for a period of time, I want to...

25 December 2019 3,178 1 View

What is the defination of major phase in XRD patterns?

In the picture named "Major phase", phase 4 matched the strongest diffraction peak in the pattern, whereas phase 1 shown the highest content according to the semi-quantitative result (for example,...

29 November 2018 4,050 1 View

Must the corresponding crystal planes of the X-ray characteristic peaks have atoms present?

Recently we synthesized some CdS particles. Prepared samples were characterized by X-ray diffraction. The ayanlysis result shows a hexagonal structure (ICSD 43599) in space-group of P 63 m c...

05 April 2017 8,201 4 View

How do I get spherical cadmium sulphoselenide crystals?

I synthesized some cadmium sulphoselenide crystal using hydro-thermal method with the starting materials of Na2S, CdSO4 and Se. Na2S was added into a solution which had CTAB dissolved previously,...

08 December 2015 4,962 3 View