Recent content by zixue

Thank you DrDu. I was wondering where can we find reported data with negative capacitance as a function of frequency for conductors. It is quite hard to get a data comparison for common metals. Does anyone got any idea?

Thanks ultrafastped! looking at it right now.

Thanks DrDu. So what happen at even lower frequency region in the metal that cause an increase in negative permittivity followed by a decrease in negative permittivity e.g. well-shaped pattern of e' as a function of frequency? i guess i'd figured out the decrease in negative permittivity as the...

i am wondering too. following the equation C=dQ/dV, is the charge repelled or the field? what is the phenomena happened in most metals? Some may response with the collision frequency, i guess. help, please?

help!

bump!

help?

bump!

Hi guys, I am using Xpert Highscore Plus to carry out a Rietveld refinement for my XRD pattern. I am looking at the lattice parameters and weight fractions. I am fine with the phase identification. However, it tends to show that my secondary phase (MgO) has higher weight fraction than the...