TY - JOUR
T1 - Magnetocaloric effect in La0.7NdxBa(0.3-x)MnO3(x = 0, 0.05, 0.1) perovskite manganites
AU - Ünlü, C. Gökhan
AU - Tanış, Y. Emre
AU - Kaynar, M. Burak
AU - Şimşek, Telem
AU - Özcan, Şadan
N1 - Publisher Copyright:
© 2017
PY - 2017
Y1 - 2017
N2 - We have synthesized La0.7NdxBa(0.3-x)MnO3(x = 0, 0.05, 0.1) perovskite manganites by using sol-gel method and investigated structure, magnetic and magnetocaloric properties. Structural analysis revealed that La0.7Ba0.3MnO3and La0.7Nd0.05Ba0.25MnO3have cubic and La0.7Nd0.1Ba0.2MnO3rhombohedral structure. The Curie temperature of the samples decreased with increasing Nd content and equals to 303, 293 and 257 K for x = 0, 0.05, 0.1, respectively. We present experimentally by using magnetization isotherms and heat-capacity measurements that room temperature magnetic refrigeration is successfully achieved for La0.7Nd0.05Ba0.25MnO3structure by tuning the Mn3+to Mn4+ratio. Additionally, zero-field and field-dependent heat-capacity measurements were compared to investigate the accuracy of the value of the adiabatic temperature-change.
AB - We have synthesized La0.7NdxBa(0.3-x)MnO3(x = 0, 0.05, 0.1) perovskite manganites by using sol-gel method and investigated structure, magnetic and magnetocaloric properties. Structural analysis revealed that La0.7Ba0.3MnO3and La0.7Nd0.05Ba0.25MnO3have cubic and La0.7Nd0.1Ba0.2MnO3rhombohedral structure. The Curie temperature of the samples decreased with increasing Nd content and equals to 303, 293 and 257 K for x = 0, 0.05, 0.1, respectively. We present experimentally by using magnetization isotherms and heat-capacity measurements that room temperature magnetic refrigeration is successfully achieved for La0.7Nd0.05Ba0.25MnO3structure by tuning the Mn3+to Mn4+ratio. Additionally, zero-field and field-dependent heat-capacity measurements were compared to investigate the accuracy of the value of the adiabatic temperature-change.
KW - Adiabatic temperature-change
KW - Curie temperature
KW - Entropy-change
KW - Heat-capacity
KW - Magnetocaloric effect
KW - Perovskite manganite
UR - https://www.scopus.com/pages/publications/85012106651
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=performanshacettepe&SrcAuth=WosAPI&KeyUT=WOS:000396950900008&DestLinkType=FullRecord&DestApp=WOS_CPL
U2 - 10.1016/j.jallcom.2017.02.030
DO - 10.1016/j.jallcom.2017.02.030
M3 - Article
AN - SCOPUS:85012106651
SN - 0925-8388
VL - 704
SP - 58
EP - 63
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -