There are several evidences of PdHx HTS behavior from research groups.
Article Magnetic and transport properties of PdH: Intriguing superco...
somethings interesting:
High Temperature Superconductivity In Pd-[H(D)]X System
Since past August 2014 when I have posted the question; have someone arguments to debate?
Possibility of high temperature superconducting phases in PdH
Article Possibility of high temperature superconducting phases in PdH
Dear Prof. Daniel,
personally we have tried to setup a neutron diffraction scattering but unfortunately until now we had no chance to do it. Inside Pd lattice there are two possible sites, Octahedral and Tetrahedral, just for hypotetical example if you fill all the Oct sites you have PdH then filling the Tet sites you will achieve PdH3. What is really happen is that you cannot fill all the Oct, but at about 60% of Oct filling, H start to fill Tet sites.
Have you suggestion to measure the crystal structure of PdH?
cordiality
I have an access rather easy to neutron diffraction at the ILL. But the sample must be D-charged (not with H, you know). In the past I had also used in-situ high pressure experiment at ESRF.
In fact you know that, according to the Fukai's technique it is possible to transform PdHx (x
Dear Prof. Daniel,
sorry for delay but its a very busy period this one. I know you was working with Fukai, I was working for one year in Japan in the special project NHE.
usually I produced wire samples to be measured with SQUID's and I can even produce tape samples let say 4mm x 10mm x 0.1mm.
Let me know how we can go forward with the understanding.
I don't know if we produce SAV in the PdHx sample, but as you explained, the energy of insertion is important but another important parameter is the insertion time, then the volume and shape of the sample.
awaiting your comments
cordiality
Paolo
Dear all,
regarding Octahedral (O) / Tetrahedral (T) sites occupancy in Pd-H(D) :
mentionning that for H/Pd = 0.6, some T sites are filled,
have you in mind the work made by the Australian Team : K.G. McLennan, E.MacA. Gray, etc ... in 2008, 2003 ?
Sorry for this digression.
Regards.
Nicolas.
News :
"Superconductivity in palladium hydride and deuteride at 52-61 kelvin"
by H.M. Syed, T.J. Gould, C.J. Webb and E.MacA Gray
https://arxiv.org/abs/1608.01774
A very interesting review : "Hydrogen-modified superconductors: A review".
http://www.sciencedirect.com/science/article/pii/S0079678616000030
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