Absence of discontinuities in ion-channeling parameters for YBa2 Cu3O7δ thin films
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Absence of discontinuities in ion-channeling parameters for YBa2Cu3O72d thin films
We have measured the ion-channeling minimum yield (xmin) and angular width (C1/2) for Y, Ba, Cu, and O in 2000 Å ~001!-oriented films of YBa2Cu3O72d on MgO. The measurements mapped out a 30 K region around the critical temperature (Tc) in 1–2 K steps, and Tc was determined in situ. A O~a,a!O resonance was used to study the O motions. xmin increases and C1/2 decreases with increasing temperature...
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