Weak ferromagnetism in BiFeO3 doped with titanium |
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| Authors: | I.O. Troyanchuk, N.V. Tereshko, A.N. Chobot, M.V. Bushinsky,K. B rner |
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| Affiliation: | aSSPA “Scientific-Practical Materials Research Centre of NAS of Belarus”, P. Brovka str. 19, Minsk 220072, Belarus;bPhysics Department (IV. Physics Institute), University of Gottingen, F. Hund Platz 1, Gottingen 37077, Germany |
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| Abstract: | The Bi1−xAxFe1−xTixO3 (A—Ca, Sr, Pb, Ba) and BiFe1−xTixO3+δ systems have been studied using X-ray, neutron powder diffraction and magnetization measurements in a magnetic field up to 14 T. It was found that all Bi1−xAxFe1−xTixO3 solid solutions are rhombohedral up to x=0.3. In the case of BiFe1−xTixO3+δ the rhombohedral distortion preserved up to x=0.11. A homogeneous weakly ferromagnetic state was found for Bi1−xCaxFe1−xTixO3 (0.15≤x≤0.25) and BiFe1−xTixO3+δ (0.06≤x≤0.11), probably due to magnetoelectric interactions, whereas Bi1−xAxFe1−xTixO3 (A—Sr, Pb, Ba) compounds above doping level x>0.1 seem to be collinear antiferromagnets. |
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| Keywords: | Bismuth compounds X-ray diffraction Neutron powder diffraction Multiferroics Antiferromagnetic materials |
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