Preparation and Magnetic Studies of Mn Substituted Analogues of BiFeO3
Abstract
Manganese substituted samples (for iron) in the multiferroic BiFeO3 have been prepared using solid state ceramic route. It has been possible to prepare a sample with the highest 40% Mn content. Reitveld analysis of the X-ray diffraction patterns shows that the substituted analogues crystallize in rhombohedral symmetry in R-3̄c space group. Effort to prepare 50 atomic% Mn substituted sample did not succeed. Magnetization measurements have been made in the temperature range 20K-300K and in fields upto 8 kOe. Magnetic nature of the 40 atomic% Mn substituted sample is alike that of 30 atomic% Mn substituted one. Mn induces weak ferromagnetism with the average magnetic moment increasing with its concentration.
- Publication:
-
XVI National Seminar on Ferroelectrics and Dielectrics (NSFD-XVI)
- Pub Date:
- November 2011
- DOI:
- 10.1063/1.3644422
- Bibcode:
- 2011AIPC.1372...83C
- Keywords:
-
- X-ray diffraction;
- crystal symmetry;
- magnetic moments;
- ferromagnetic materials;
- 61.05.cp;
- 61.50.Ah;
- 75.20.Hr;
- 75.50.Cc;
- X-ray diffraction;
- Theory of crystal structure crystal symmetry;
- calculations and modeling;
- Local moment in compounds and alloys;
- Kondo effect valence fluctuations heavy fermions;
- Other ferromagnetic metals and alloys