1. Optical and magnetic properties of Cd(1−x)FexTiO3 (x = 1%)
- Author
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L. Karoum, R. Bahloul, V. V. Srinivasu, Salaheddine Sayouri, Mohammed Khenfouch, and Maryanah Hamzah
- Subjects
010302 applied physics ,Materials science ,Photoluminescence ,Condensed matter physics ,chemistry.chemical_element ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Oxygen ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,chemistry ,Ferromagnetism ,Impurity ,0103 physical sciences ,Antiferromagnetism ,Diamagnetism ,Electrical and Electronic Engineering ,0210 nano-technology ,Spin (physics) ,Spontaneous magnetization - Abstract
Sol–gel route was used to prepare Fe-doped CdTiO3 sample with 1 wt% and its optical and magnetic properties investigated. In particular, photoluminescence study revealed the existence of defects, such as oxygen vacancies, and of transitions from electronic states of Cd2+, Ti4+ and Fe2+ to those of O2−. Magnetic investigations showed the existence of two oxidation states of iron, 2+ and 3+, and of an antiferromagnetic order at temperatures inferior to 20 K with a slight canting of spin moments of the magnetic species leading to spontaneous magnetization which values decrease with the temperature. Above 20 K, a ferromagnetic behaviour is dominant and, at room temperature, a diamagnetic behaviour prevails. The latter has been interpreted as due to the presence of CdO impurities as revealed by XRD and photoluminescence results.
- Published
- 2018
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