/diy/ - Do It Yourself

I've not done any sputtering myself but I am fairly sure these high temp superconductor materials are a real pain to work with. You are gonna need a fairly professional setup to get anything functional. May I ask what you intend to do with strips of ReBCO?

>>1770126
That would be a pretty obvious answer but I have a couple of projects in mind that would benefit greatly from high power magnetic field, like plasma condiment, advanced metal detector, particle accelerators etc. I'm a dreamer let's say. Don't want to sound completely brain dead, I can only just imagine how hard is it to achieve such things

>>1770126
I'll probably buy it before I will be able to make it myself because the rare material part is very thin so it can be done relatively cheaply

>>1770131
To my knowledge high temp superconductors only have a high critical current density if they are single crystal, ie grown from a melt from a single seed crystal followed by post processing like annealing. Sputtering can only ever grow polycrystalline material which has a poor critical current and won't give you big fields.

There is a reason high temp superconductors are not routinely used in industry or even scientific applications. We use magnets up to 11T at my work and the limit for a reasonably large field geometry (30mm diameter) is around 15T, always using conventional metals at liquid helium temps.

If you want to play around with large fields the most accessible method is a big water cooled electromagnet or even just some giant neodymium magnets (these can reach 1T at their surface)

>>1770145
I found out about that REBCO 2nd gen HTSs have enormous critical field strength from MIT presentation of ARC/SPARC reactors
https://www.youtube.com/watch?v=KkpqA8yG9T4
Here's a news article about record breaking magnets that use it
https://www.researchgate.net/publication/333740097_455-tesla_direct-current_magnetic_field_generated_with_a_high-temperature_superconducting_magnet

>>1770145
>>1770147
so it appears they figured out how to create the required atomic structure

>>1770147
The record breaking performance is achieved at liquid helium temps. How are you planning to cool this? Do you have any cryogenic experience? Improperly handled cryogenics are very dangerous, not just from cold burns or asphyxiation, but unless you are careful you can freeze up your vessel trapping boiling cryogen in a sealed volume which will result in an explosion

>>1770557
>The record breaking performance is achieved at liquid helium temps
The article was a reply to:
>>To my knowledge high temp superconductors only have a high critical current density if they are single crystal
>How are you planning to cool this?
I don't think I'll ever need anything more than LN2
>Do you have any cryogenic experience?
Only from the things I saw other people do and what I've read on the internet. I'm not going to rush it
>Improperly handled cryogenics are very dangerous, not just from cold burns or asphyxiation, but unless you are careful you can freeze up your vessel trapping boiling cryogen in a sealed volume which will result in an explosion
Sounds like someone did exactly that, The only thing I can say to that is: I usually too careful I can sprint pretty fast

>>1770557
>The record breaking performance is achieved at liquid helium temps
The article was a reply to: >>"To my knowledge high temp superconductors only have a high critical current density if they are single crystal"
>How are you planning to cool this?
I don't think I'll ever need anything more than LN2 to get to the field strength I'll ever need
>Do you have any cryogenic experience?
Only from the things I saw other people do online and what I've read on the internet. I'm not going to rush it
>Improperly handled cryogenics are very dangerous, not just from cold burns or asphyxiation, but unless you are careful you can freeze up your vessel trapping boiling cryogen in a sealed volume which will result in an explosion
Sounds like someone did exactly that, The only thing I can say to that is: I'm usually too careful and I can sprint pretty fast