SDR and superconductivity
Conundrum, Mon Oct 06 2014, 08:22AMHi all.
Recent research on the complex waveforms of superconductors leads me to the hypothesis that an SDR setup could detect latent superconductivity in a compound.
The effect would be that at some combination of magnetic field, temperature and wideband RF field a phase transition would occur in the complex waveform, such that some frequencies would be absorbed and others boosted.
This would unambiguously show that a given material had a superconducting fraction even if it was less than 1/10000th of the bulk and thus allow material improvements to be made.
A variant of this would be a metal detector like device with a strong permanent magnet that would be able to detect superconducting materials in nature by measuring said fields.
Any ideas?
-A
edit: modified due to IP issues, PM me for further information.
Re: SDR and superconductivity
Steve Conner, Mon Oct 06 2014, 10:02AM
Can you explain how these phase transitions "unambiguously" show that a fraction of the material became superconducting? To me, a much more likely explanation is that the resistivity of the whole material changed by a tiny bit.
Steve Conner, Mon Oct 06 2014, 10:02AM
Can you explain how these phase transitions "unambiguously" show that a fraction of the material became superconducting? To me, a much more likely explanation is that the resistivity of the whole material changed by a tiny bit.
Re: SDR and superconductivity
Conundrum, Mon Oct 06 2014, 11:23AM
Similar curves have been documented in Y123 and BSCCO samples from 1987 when HTSC was discovered.
Also with classic magnetoresistive (MR) materials this effect is normally not seen, resistance is linear or logarithmic
with changing magnetic field and temperature has much less of an effect.
Spin valve GMR is slightly different, with these you can indeed see steep changes in resistance with a small magnetic field change due to the quantum Hall effect.
I am still learning so bear with me..
edit:
Conundrum, Mon Oct 06 2014, 11:23AM
Similar curves have been documented in Y123 and BSCCO samples from 1987 when HTSC was discovered.
Also with classic magnetoresistive (MR) materials this effect is normally not seen, resistance is linear or logarithmic
with changing magnetic field and temperature has much less of an effect.
Spin valve GMR is slightly different, with these you can indeed see steep changes in resistance with a small magnetic field change due to the quantum Hall effect.
I am still learning so bear with me..
edit:
Re: SDR and superconductivity
Andy, Thu Oct 09 2014, 04:47AM
My bad
Andy, Thu Oct 09 2014, 04:47AM
My bad
Re: SDR and superconductivity
Conundrum, Fri Oct 10 2014, 04:21AM
Also relevant to this discussion is a new material called tungsten ditelluride (WTe2) which it turns out has "large" magnetoresistance ie it doesn't saturate.
See
Also
Conundrum, Fri Oct 10 2014, 04:21AM
Also relevant to this discussion is a new material called tungsten ditelluride (WTe2) which it turns out has "large" magnetoresistance ie it doesn't saturate.
See
Also
Re: SDR and superconductivity
Andy, Fri Oct 10 2014, 05:27AM
Hi Conundrum
Just a rought back of the note book but might help
W = 54.4947
360 / = (4π×10−7*1*sin(54.49) = 12.568*0.81406
= 10.23*(45Degrre*X*3.142) =
22.73xy*(45Degree*Y*3.142) =
50.50
Te = 77.5502
360 /=(4π×10−7*1*sin(77.5502) = 12.568*0.976485
=12.27246*(45Degrre*X*3.142) =
27.266xy*(45Degree*Y*3.142) =
60.5776
Te =* 2 Combine subtract
121.1553
54.532
87.843Angles
39.538
72.85
24.54
W+Te2 X Y Z angles of electron direction on orbit
121.1553+50.50 = 171.6553=143.853=126.313
54.532+50.50 = 105.032=77.262=59.722
87.843Angles+50.50 = 138.343=110.573=93.033
39.538+50.50 = 90.038=62.268=44.728
72.85+50.50 = 123.35=95.58=78.04
24.54+50.50 = 75.04=47.27=29.73
Andy, Fri Oct 10 2014, 05:27AM
Hi Conundrum
Just a rought back of the note book but might help
W = 54.4947
360 / = (4π×10−7*1*sin(54.49) = 12.568*0.81406
= 10.23*(45Degrre*X*3.142) =
22.73xy*(45Degree*Y*3.142) =
50.50
Te = 77.5502
360 /=(4π×10−7*1*sin(77.5502) = 12.568*0.976485
=12.27246*(45Degrre*X*3.142) =
27.266xy*(45Degree*Y*3.142) =
60.5776
Te =* 2 Combine subtract
121.1553
54.532
87.843Angles
39.538
72.85
24.54
W+Te2 X Y Z angles of electron direction on orbit
121.1553+50.50 = 171.6553=143.853=126.313
54.532+50.50 = 105.032=77.262=59.722
87.843Angles+50.50 = 138.343=110.573=93.033
39.538+50.50 = 90.038=62.268=44.728
72.85+50.50 = 123.35=95.58=78.04
24.54+50.50 = 75.04=47.27=29.73
Re: SDR and superconductivity
Conundrum, Sun Oct 19 2014, 04:28PM
Interesting, thanks for sharing.
EDIT: Time to build a prototype and get experimenting.
I have been criticized on here for not getting anything built so this will be rectified as soon as possible.
-A
Conundrum, Sun Oct 19 2014, 04:28PM
Interesting, thanks for sharing.
EDIT: Time to build a prototype and get experimenting.
I have been criticized on here for not getting anything built so this will be rectified as soon as possible.
-A
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