Turkish Journal of Physics
Abstract
Fe_2TiO_5 shows a spin glass transition at 53 K and is mainly known for its semiconducting nature. A `LiAl' pair is incorporated in Fe_2TiO_5 by high temperature solid-state reaction. Fe_2TiO_5 + xLiAlH_4 \frac{1000 °C}{24 hrs in atmosphere} \to Fe_2Ti_{1-x} (LiAl)_xO_5 x < x The presence and quantity of ``LiAl'' is confirmed by Inductively Coupled Argon Plasma (IACP) technique. The crystalline geometry is determined by X- ray diffraction and Fourier Transform Infrared (FTIR) spectroscopy of powders. It remains orthorhombic pseudobrookite. Certain reflections of Fe_2TiO_5 are observed to enhance progressively with the content of ``LiAl''. The magnetic hysteresis parameters are observed to depend on the content of ``LiAl''. Initial susceptibility and permeability are measured as a function of temperature. The magnetic order is discussed and explained. It is concluded that the pseudobrookite possesses a `spinel like network', which is strengthened by incorporation of ``LiAl''. It produces a weak long-range ferrimagnetic order in place of short-range antiferromagnetic order. Possible applications are discussed in the text.
DOI
-
Keywords
Pseudobrookite, Lithiation, Intercalation.
First Page
25
Last Page
31
Recommended Citation
MADARE, M. A. and SALVI, S. V. (2005) "Magnetic Behaviour of ``Lithiated'' Fe_2TiO_5," Turkish Journal of Physics: Vol. 29: No. 1, Article 4. Available at: https://journals.tubitak.gov.tr/physics/vol29/iss1/4
