caa a22 4500 463215753 CHVBK 20180405153155.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s00339-007-3902-3 doi (NATIONALLICENCE)springer-10.1007/s00339-007-3902-3 The structural and magnetic properties of Co-doped titanate nanotubes synthesized under hydrothermal conditions [Elektronische Daten] [C. Huang, X. Liu, L. Kong, W. Lan, Q. Su, Y. Wang] Co-doped titanate nanotubes were prepared from hydrothermal treatment on Co-doped anatase TiO2 powders in a concentrated NaOH aqueous solution and characterized by a variety of techniques. We mainly investigated the structural and magnetic properties of these nanotubes. It was found that the obtained nanotubes might possibly be constructed from H2Ti3O7, their undoped counterpart. The result from Raman spectra showed that Ti-OH bonds existed in the tubular structure. The electron paramagnetic resonance and X-ray photoelectron spectroscopy studies clearly showed that the Co was incorporated into the titanate lattice as Co2+ and substituted for Ti cations sites. Also, from the photoluminescence measurement, the presence of oxygen vacancies was detected in the nanotubes. The vibrating sample magnetometer measurement revealed a clear paramagnetic behavior with weakly ferromagnetic ordering at room temperature. The results suggested that ferromagnetism of the nanotubes was related to the oxygen vacancies and could be suppressed by their quantum size. Springer-Verlag, 2007 Huang C. Department of Physics, Lanzhou University, 730000, Lanzhou, P.R. China aut Liu X. Department of Physics, Lanzhou University, 730000, Lanzhou, P.R. China aut Kong L. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, 730050, Lanzhou, P.R. China aut Lan W. Department of Physics, Lanzhou University, 730000, Lanzhou, P.R. China aut Su Q. Department of Physics, Lanzhou University, 730000, Lanzhou, P.R. China aut Wang Y. Department of Physics, Lanzhou University, 730000, Lanzhou, P.R. China aut Applied Physics A Springer-Verlag 87/4(2007-06-01), 781-786 0947-8396 87:4<781 2007 87 339 https://doi.org/10.1007/s00339-007-3902-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-3902-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huang C. Department of Physics, Lanzhou University, 730000, Lanzhou, P.R. China aut NATIONALLICENCE 700 1- Liu X. Department of Physics, Lanzhou University, 730000, Lanzhou, P.R. China aut NATIONALLICENCE 700 1- Kong L. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, 730050, Lanzhou, P.R. China aut NATIONALLICENCE 700 1- Lan W. Department of Physics, Lanzhou University, 730000, Lanzhou, P.R. China aut NATIONALLICENCE 700 1- Su Q. Department of Physics, Lanzhou University, 730000, Lanzhou, P.R. China aut NATIONALLICENCE 700 1- Wang Y. Department of Physics, Lanzhou University, 730000, Lanzhou, P.R. China aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 87/4(2007-06-01), 781-786 0947-8396 87:4<781 2007 87 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer