Zinc Vacancy-Induced Room-Temperature Ferromagnetism in Undoped ZnO Thin Films

<table> (a) Doppler-broadening parameter “<svg height="10.725" id="M7" style="vertical-align:-0.1254pt" version="1.1" viewbox="0 0 11.375 10.725" width="11.375" xmlns="http://www.w3.org/2000/svg">
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</svg>” as a function of incident positron energy for the ZnO samples: as-grown, annealed at 500°C in O<sub>2</sub> and annealed at 500°C in H<sub>2 </sub> atmosphere. (b) The spectra of <svg height="10.575" id="M8" style="vertical-align:-0.20064pt" version="1.1" viewbox="0 0 17.9625 10.575" width="17.9625" xmlns="http://www.w3.org/2000/svg">
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</svg> parameter versus <svg height="10.725" id="M9" style="vertical-align:-0.1254pt" version="1.1" viewbox="0 0 11.375 10.725" width="11.375" xmlns="http://www.w3.org/2000/svg">
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Journal of Nanomaterials

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Figure 3

Figure 3: Zinc Vacancy-Induced Room-Temperature Ferromagnetism in Undoped ZnO Thin Films 