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XRD, DTA and TGA investigations of the BaFe12-xAlxO19 (x=0.3, 0.9 and 1.2) solid solutions

S. H. JABAROV1,2,* , A. V. TRUKHANOV3, S. V. TRUKHANOV3, A. I. MAMMADOV2, V. A. TURCHENKO1, R. Z. MEHDIYEVA2, R. E. HUSEYNOV2

Affiliation

  1. Joint Institute for Nuclear Research, Dubna, 141980, Russia
  2. Institute of Physics, Academy of Sciences of Azerbaijan, Baku, AZ-1141, Azerbaijan
  3. Scientific and Practical Materials Research Centre of NAS of Belarus, Minsk, 220072, Belarus

Abstract

By X-ray diffraction, differential thermal analysis (DTA) and thermo-gravimetric analysis (TGA) were investigated BaFe12-xAlxO19 hexaferrites with various concentrations of Al (x = 0.3, 0.9 and 1.2). Crystal structure of compounds was determined, and it determined that under normal condition (P = 0 GPa, T = 300 K) they possess structure is hexagonal symmetry with the space group P63/mmc. Replacing Fe3+ ions Al3+ with ions, on account of reducing ion radius, decrease of indices of parameters was occurred. This crystal structure is saved in a temperature range 30 - 950 ºC and structural phase transition do not occur. Energy supplied to a system is fully swallowed by a system, monotonic decrease is occurred in TGA curve and in DTA curve endo and exo effects do not occur..

Keywords

Differential thermal analysis (DTA), Thermo-gravimetric analysis (TGA), X-ray diffraction, Barium hexaferrites, diamagnetic substitution.

Citation

S. H. JABAROV, A. V. TRUKHANOV, S. V. TRUKHANOV, A. I. MAMMADOV, V. A. TURCHENKO, R. Z. MEHDIYEVA, R. E. HUSEYNOV, XRD, DTA and TGA investigations of the BaFe12-xAlxO19 (x=0.3, 0.9 and 1.2) solid solutions, Optoelectronics and Advanced Materials - Rapid Communications, 9, 3-4, March-April 2015, pp.468-470 (2015).

Submitted at: Sept. 16, 2013

Accepted at: March 19, 2015