Research Article
Rare Earth-Doped BiFeO3 Thin Films: Relationship between Structural and Magnetic Properties
Table 1
List of structural phases, lattice parameters, and Fe
2+ : Fe
3+ ratio for RE
Bi
FeO
3 films (RE = Ho, Sm, Eu, Pr, and Nd;
= 0.1 and 0.2).
| | Compound | Structure | Lattice parameters | Fe2+ : Fe3+ |
| | PrBiFeO3 | = 0.1 | Rhombohedral | 3.933 Ǻ | 40 : 60 | | = 0.2 | Phase 1: orthorhombic | = 4.9817 Ǻ
= 5.5108 Ǻ
= 7.1725 Ǻ |
51.8 : 48.2 | | Phase 2: tetragonal | = = 4.622 Ǻ
= 6.5936 Ǻ |
| | NdBiFeO3 | = 0.1 | Rhombohedral | 3.9329 Ǻ | 40 : 60 | | = 0.2 | Phase 1: orthorhombic | = 4.7412 Ǻ
= 5.1102 Ǻ
= 7.7901 Ǻ |
48.5 : 51.5 | | Phase 2: tetragonal | = = 4.4879 Ǻ
= 6.5117 Ǻ |
| | HoBiFeO3 | = 0.1 | Rhombohedral | 3.925 Ǻ | 50 : 50 | | = 0.2 | Orthorhombic | = 4.9761 Ǻ
= 5.6361 Ǻ
= 8.6088 Ǻ | 45.6 : 54.4 |
| | SmBiFeO3 | = 0.1 | Rhombohedral | 3.925 Ǻ | 50 : 50 | | = 0.2 | Orthorhombic | = 5.96573 Ǻ
= 5.17858 Ǻ
= 2.85499 Ǻ | 43.7 : 56.3 |
| | EuBiFeO3 | = 0.1 | Rhombohedral | 4.5875 Ǻ | 48.6 : 51.4 | | = 0.2 | Tetragonal | = = 4.6314 Ǻ
= 6.5968 Ǻ | 48.7 : 51.3 |
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