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Transition from paramagnetism to ferromagnetism in HfO2 nanorods
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10.1063/1.4792485
/content/aip/journal/jap/113/7/10.1063/1.4792485
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/7/10.1063/1.4792485
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Figures

Image of FIG. 1.
FIG. 1.

(a), (c), and (d) are the TEM image along with SAED pattern, HRTEM image and corresponding FFT pattern in the [0-11] zone axis of the pristine HfO2 sample, respectively. (b), (e), and (f) are the TEM image along with SAED pattern, HRTEM image, and corresponding FFT pattern in the [0-11] zone axis of the HfO2 sample annealed at 400 °C, respectively. (g) XRD patterns of pristine HfO2 sample, the same HfO2 sample annealed at 200 °C for 5 h (step 1) and 400 °C for another 5 h (step 2) in reducing atmosphere. The red lines at the bottom are reference peaks for monoclinic HfO2.

Image of FIG. 2.
FIG. 2.

Magnetization curves measured at 300 K (a) and 5 K (b) for the pristine HfO2 nanorod sample and the same sample annealed in reducing atmosphere at 200 °C for 5 h (step 1) and at 400 °C for another 5 h (step 2). Insets are their low field parts.

Image of FIG. 3.
FIG. 3.

(a) ZFC and FC magnetization versus temperature curves for the HfO2 samples annealed in reducing atmosphere at 200 °C for 5 h (step 1) and at 400 °C for another 5 h (step 2). The applied field is 100 Oe. (b) FC magnetization versus temperature curves measured with a high field of 20 kOe.

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/content/aip/journal/jap/113/7/10.1063/1.4792485
2013-02-20
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Transition from paramagnetism to ferromagnetism in HfO2 nanorods
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/7/10.1063/1.4792485
10.1063/1.4792485
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