Magnetic Susceptibility of Doped Si Nanowhiskers
The present paper deals with studies of magnetic properties of Si〈B〉 whiskers with large boron impurity concentration of up to 1–5% in the range of magnetic fields (0.3–4.0) kOe and temperatures of 4.2–300 K. In particular, magnetic susceptibility of whiskers has been investigated. The results obtained in the temperature range of 77–300 K have shown that magnetic susceptibility of whiskers substantially differs from that of bulk Si, which is revealed in the two significant peculiarities: (1) a substantial paramagnetic contribution into whisker magnetization and magnetic susceptibility; (2) a non-linear dependency of magnetization on magnetic field intensity. These facts indicate an existence of magnetic ordering in whiskers. The observed magnetization hysteresis at 4.2 K confirms the above supposition. Possible reasons of the observed effects have been discussed.
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Document Type: Research Article
Publication date: November 1, 2012
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