Magnetic Behaviour of ``Lithiated`` Fe2TiO5

Authors : Mahadev Anapa MADARE, Sadanand Vitthal SALVI

Pages : 25-31

View : 9 | Download : 5

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Fe2TiO5 shows a spin glass transition at 53 K and is mainly known for its semiconducting nature. A `LiAl` pair is incorporated in Fe2TiO5 by high temperature solid-state reaction. Fe2TiO5 + xLiAlH4 \frac{1000 °C}{24 hrs in atmosphere} \to Fe2Ti1-x insert ignore into journalissuearticles values(LiAl);xO5 x < x The presence and quantity of ``LiAl`` is confirmed by Inductively Coupled Argon Plasma insert ignore into journalissuearticles values(IACP); technique. The crystalline geometry is determined by X- ray diffraction and Fourier Transform Infrared insert ignore into journalissuearticles values(FTIR); spectroscopy of powders. It remains orthorhombic pseudobrookite. Certain reflections of Fe2TiO5 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.
Keywords : Pseudobrookite, Lithiation, Intercalation