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(Color online) XRD spectra of film deposited on (001) sapphire substrates at and rapidly thermally annealed at 900 and for , respectively.
(Color online) Room-temperature curves for (a) a bare sapphire substrate and the sapphire substrate plus a thick film deposited at in a vacuum of , and for (b) the thick film after subtracting the diamagnetic background from the sapphire substrate. The inset in (b) is the amplified hysteresis constructed from the curve in (b).
(Color online) Room-temperature curves of (a) 30 and films deposited at on (001) sapphire substrates; (b) films deposited at on (001) sapphire, MgO (001), and Si(100) substrates, respectively; (c) films deposited on (001) sapphire substrates at 500, 600, 700, and , respectively; and (d) film deposited at on (001) sapphire substrates before and after RTA at in oxygen ambient for . All the films are deposited in high vacuum of .
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