Defect-mediated ferromagnetism in insulating Co-doped anatase TiO2 thin films

نویسندگان

  • K. Griffin Roberts
  • M. Varela
  • S. Rashkeev
  • S. T. Pantelides
  • S. J. Pennycook
  • Kannan M. Krishnan
چکیده

K. Griffin Roberts,1 M. Varela,2 S. Rashkeev,3,2,* S. T. Pantelides,3,2 S. J. Pennycook,2,3 and Kannan M. Krishnan1,† 1Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA Received 2 June 2008; published 7 July 2008

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Intrinsic ferromagnetism in insulating cobalt doped anatase TiO2.

Using complementary experiments we show that the room temperature ferromagnetism observed in anatase Co:TiO(2) films is not carrier mediated, but coexists with the dielectric state. TEM and x-ray absorption spectroscopy reveal a solid solution of Co in anatase, where Co is not metallic but in the +2 state substituting for Ti. Measurements at 300 K yield a M(S) of 1.1 mu(B)/Co atom, while all fi...

متن کامل

Fabrication of Nb/V co-doped TiO2 thin films and study of structural, optical and photocatalytic properties

In this study, different samples of Niobium and Vanadium co-doped titania  thin films (5-10-15 mol% Nb and 5-10-15 mol% V) were prepared via sol−gel dip coating method, using niobium chloride as niobium precursor, ammonium metavanadate as vanadium precursor, and titanium (IV) butoxide (TBT) as titanium precursor. The effects of doping amount on the structural, optical, and photo-catalytic prope...

متن کامل

Fabrication of Nb/V co-doped TiO2 thin films and study of structural, optical and photocatalytic properties

In this study, different samples of Niobium and Vanadium co-doped titania  thin films (5-10-15 mol% Nb and 5-10-15 mol% V) were prepared via sol−gel dip coating method, using niobium chloride as niobium precursor, ammonium metavanadate as vanadium precursor, and titanium (IV) butoxide (TBT) as titanium precursor. The effects of doping amount on the structural, optical, and photo-catalytic prope...

متن کامل

Unusual Electronic Transport and Magnetism in Titanium Oxide Based Semiconductors and Metals

Title of dissertation: UNUSUAL ELECTRONIC TRANSPORT AND MAGNETISM IN TITANIUM OXIDE BASED SEMICONDUCTORS AND METALS Shixiong Zhang, Doctor of Philosophy, 2007 Dissertation directed by: Professor T. Venky Venkatesan Department of Physics The main objective of this thesis was to explore the structural, electrical, magnetic and optical properties of titanium based novel oxide thin films, such as t...

متن کامل

Preparation and characterization of nanostructured S and Fe co-doped TiO2 thin film by ultrasonic-assisted spray pyrolysis method

Nanostructured TiO2 and S and Fe co-doped TiO2 thin films with high transparency were prepared on glass substrate through ultrasonic-assisted spray pyrolysis technique. The effects of doping on morphological, optical an...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008