I was told that the first sentence is usual but the second one would be hardly said.
- He got his memory back thanks to the album.
- He got back his memory thanks to the album.
And I think both are OK and actually used in the reality.
But someone insists the second is GRAMMATICALLY OK but not really used. He insists that it would be OK if the object(noun) was long, but in this case the noun is too short to go behind.
And I can still see a lot of cases about "get back a simple noun" pattern in the link below. https://youglish.com/pronounce/get%20back%20my/english?
So I think this is just kinda optional and both are used. What do you guys think about this? The short nouns can hardly go behind phrasal verbs?