TY - JOUR
T1 - Magnetocaloric effect in (La0.7Sr0.3MnO3)1−x–(BaTiO3)x solid solution spin-glass system
AU - Nayek, C.
AU - Ray, M. K.
AU - Pal, A.
AU - Obaidat, I. M.
AU - Murugavel, P.
N1 - Funding Information:
The authors acknowledge the support given by Prof. P. S. Anil Kumar and Kaustuv Manna, Department of Physics, Indian Institute of Science, Bangalore for the ac susceptibility measurement. This work has been partially supported by UAEU Program for Advanced Research (UPAR) under the Grant No. 31S241.
Publisher Copyright:
© 2017, Springer Science+Business Media, LLC.
PY - 2018/2/1
Y1 - 2018/2/1
N2 - (La0.7Sr0.3MnO3)1−x–(BaTiO3)x solid solution samples (x = 0, 0.03, and 0.08) were synthesized by sol–gel route. Pure La0.7Sr0.3MnO3 has orthorhombic structure with Pbnm space group whereas solid solution samples possess rhombohedral structure with R-3c space group. Temperature-dependent ac susceptibility at different frequencies and memory effect confirmed the spin-glass behavior in these samples. The samples exhibited magnetocaloric coefficient around room temperature. The maximum values of magnetic entropy change observed in our samples are 0.45, 0.86, and 1.07 J Kg−1 K−1 for x = 0.03 and 0.62, 1.23 and 1.56 J Kg−1 K−1 for x = 0.08 compounds at 2, 4, and 5 T applied magnetic fields, respectively. The relative cooling power values for x = 0.03 and 0.08 are 55.9 and 116.5 J Kg−1, respectively, at 5 T. The observed multifunctional properties of the studied system give a new direction to explore the magnetocaloric effect in similar such systems.
AB - (La0.7Sr0.3MnO3)1−x–(BaTiO3)x solid solution samples (x = 0, 0.03, and 0.08) were synthesized by sol–gel route. Pure La0.7Sr0.3MnO3 has orthorhombic structure with Pbnm space group whereas solid solution samples possess rhombohedral structure with R-3c space group. Temperature-dependent ac susceptibility at different frequencies and memory effect confirmed the spin-glass behavior in these samples. The samples exhibited magnetocaloric coefficient around room temperature. The maximum values of magnetic entropy change observed in our samples are 0.45, 0.86, and 1.07 J Kg−1 K−1 for x = 0.03 and 0.62, 1.23 and 1.56 J Kg−1 K−1 for x = 0.08 compounds at 2, 4, and 5 T applied magnetic fields, respectively. The relative cooling power values for x = 0.03 and 0.08 are 55.9 and 116.5 J Kg−1, respectively, at 5 T. The observed multifunctional properties of the studied system give a new direction to explore the magnetocaloric effect in similar such systems.
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U2 - 10.1007/s10853-017-1718-x
DO - 10.1007/s10853-017-1718-x
M3 - Article
AN - SCOPUS:85031922062
SN - 0022-2461
VL - 53
SP - 2405
EP - 2412
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 4
ER -