Abstract
Yttrium iron garnet films implanted with Ne+ ions at two different doses have been analyzed by x-ray double-crystal diffractometry and conversion electron Mössbauer spectroscopy after thermal treatment at different temperatures. The strain profile, paramagnetic fraction, hyperfine fields of both the paramagnetic and magnetic fraction, and the full width at half-maximum of the Mössbauer peaks have been measured for the different temperatures. The reconstruction mechanism of the crystalline lattice has been studied. It appears that at least two different mechanisms are involved with two activation energies. The first one, which starts at nearly 150–200 °C and is completed at nearly 500–600 °C, is on a short-range scale and is driven by oxygen diffusion, while the second one, which has a higher activation energy, is on a long-range scale. There is clear evidence that, at least for the lower dose implanted sample, the reconstruction mechanism is not an epitaxial regrowth.
Published Version
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