Laser ablated Cr-doped SnO 2 thin films grown on various kinds of substrates all show ferromagnetism well beyond room temperature. Surprisingly, films of Sn 0.95 Cr 0.05 O 2 grown on LaAlO 3 substrates have a giant magnetic moment of 6 μ B /Cr, which is 20–30 times larger than that of films grown under the same conditions on SrTiO 3 and R-cut sapphire substrates. All films are highly transparent.
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Hong et al. (2005) studied this question.
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