MgB2 Superconductor: Difference between revisions
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3) Pack and press the resulting powder into sheathing material.<br> | 3) Pack and press the resulting powder into sheathing material.<br> | ||
4) Mechanically deform sample (crush the core) into a slug, ribbon or wire.<br> | 4) Mechanically deform sample (crush the core) into a slug, ribbon or wire.<br> | ||
5) Heat (possibly two or more temps for two or more times).<br> | 5) Heat (possibly two or more temps for two or more times)in stainless steel (SS) boat.<br> | ||
=== Processing Post-Reacted Samples === | === Processing Post-Reacted Samples === | ||
Revision as of 20:35, 11 May 2018
MgB2 Superconductor Project
Preparing Samples
1) Weigh appropriate amounts of Mg and B powders.
2) Mix and grind powders (in mortar) for ~ 15 minutes.
3) Pack and press the resulting powder into sheathing material.
4) Mechanically deform sample (crush the core) into a slug, ribbon or wire.
5) Heat (possibly two or more temps for two or more times)in stainless steel (SS) boat.
Processing Post-Reacted Samples
1) Possibly mechanically deform again.
2) Possibly sinter again.
2) Cut off sample ends (exposing clean sample cores).
3) Polish sample ends.
The processed sample should have reasonably low (room temp) resistivities (on the order of 0.001 Ohm x cm).
The resistance R = (resistivity x length)/area.