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- Title
Structural, Magnetic, and Magnetocaloric Properties of Pb-Substituted La0.7(Te1-xPbx)0.3MnO3 (0.0 ≤ x ≤ 0.3) Manganites.
- Authors
Kılıç Çetin, Selda; Akça, Gönül; Ayaş, Ali Osman; Akyol, Mustafa; Ekicibil, Ahmet
- Abstract
The influence of lead substitution on the magnetocaloric properties of La0.7(Te1-xPbx)0.3MnO3 (0.0 ≤ x ≤ 0.3) manganites synthesized by solid-state reaction process was studied both by experimental and theoretical modeling. The X-ray diffraction patterns reveal that samples crystallize in the rhombohedral perovskite structure. Thermomagnetic measurements indicate that the magnetic transition temperature increases gradually from 238 to 262 K with increasing Pb amount in the structure. Maximum magnetic entropy changes (ΔSM) are determined to be 7.16 for x = 0.0 and 4.76 J kg−1 K−1 for x = 0.3. Relative cooling power (RCP) values of samples are ranging between 266.94 and 195.21 J kg−1 at ΔH = 5 T. Due to relatively high ΔSM and RCP values of the samples, they can be potential materials in magnetic refrigeration applications which work around room temperature.
- Subjects
MANGANITE; MAGNETOCALORIC effects; MAGNETIC cooling; MAGNETIC entropy; MAGNETIC transitions; TRANSITION temperature; MAGNETICS
- Publication
Journal of Superconductivity & Novel Magnetism, 2020, Vol 33, Issue 2, p527
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-019-05167-9