Short answer - NO!
Deep buried magnets will not give the proper flux lines.
However, you could turn the rotor down and leave "90% Exposed" and probably get away with it. Be sure and use a proper adhesive. Super-glue, vinyl-ester resin and polyester resin are not proper adhesives (not adhesives at all in my opinion).
Check behoof's latest project and the files that zubbly and dinges have.
Ron