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. 2007 Apr 25;2(4):e395. doi: 10.1371/journal.pone.0000395

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Hsu et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The magnetic properties of IGs determined by magnetic-determining techniques. (A) An averaged magnetization curve of SQUID from the purified IGs at 300°K for six runs. (B) An image of AFM from one of the purified IGs. (C) An image of MFM from one of the purified IGs. (D) A spectrum of ESCA from the purified IGs. The left thin line shows the Fe(2p1/2) of FeOOH. The middle thin line shows the Fe(2p3/2) of Fe2O3. The right thin line shows the Fe(2p1/2) of FeO. (E) A photoelectron spectrum of elemental composition of ESCA from the purified IGs. (F) Typical X-band resonance spectra from the purified IGs at different temperatures. Right inset shows a magnified image from the arrow. Left inset shows a magnified image from the arrowhead.