Room temperature ferromagnetism of Co-doped TiO2 nanotube arrays prepared by sol–gel template synthesis

Zutic, 2004, Rev. Mod. Phys., 76, 323, 10.1103/RevModPhys.76.323 Pearton, 2004, Semicond. Sci. Technol., 19, R59, 10.1088/0268-1242/19/10/R01 Burda, 2005, Chem. Rev., 105, 1025, 10.1021/cr030063a Guo, 2005, Adv. Funct. Mater., 15, 196, 10.1002/adfm.200305098 Wu, 2005, Appl. Phys. Lett., 87, 112501, 10.1063/1.2043254 Bryan, 2005, J. Am. Chem. Soc., 127, 15568, 10.1021/ja0543447 Huang, 2006, Thin Solid Films, 505, 141, 10.1016/j.tsf.2005.10.021 Cui, 2004, Appl. Phys. Lett., 85, 1698, 10.1063/1.1784885 Manivannan, 2003, Appl. Phys. Lett., 83, 111, 10.1063/1.1590744 Bersani, 1998, Appl. Phys. Lett., 72, 73, 10.1063/1.120648 Parker, 1990, Appl. Phys. Lett., 57, 943, 10.1063/1.104274 Jeong, 2004, Appl. Phys. Lett., 84, 2608, 10.1063/1.1691499 Orendorz, 2005, Appl. Surf. Sci., 252, 85, 10.1016/j.apsusc.2005.02.002 Gopel, 1984, Surf. Sci., 139, 333, 10.1016/0039-6028(84)90054-2 Chen, 2004, J. Phys. Chem. B, 108, 15446, 10.1021/jp0469160 Jaffe, 2005, J. Appl. Phys., 97, 073908, 10.1063/1.1868056 Griffin, 2005, Phys. Rev. Lett., 94, 157204, 10.1103/PhysRevLett.94.157204 Coey, 2005, Nat. Mater., 4, 173, 10.1038/nmat1310