Influence of Gd Substitution on Structural, Magnetic and Magnetocaloric Properties in (La0.8Gd0.2)0.85Ag0.15MnO3 Perovskite Manganite System
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Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this paper, the effect of Gd substitution with La on structural, magnetic and magnetocaloricproperties in (La0.8Gd0.2)0.85Ag0.15MnO3 manganite sample prepared by sol-gel method has been studied. Thecrystal properties have been investigated by x-ray diffraction technique that shows the sample is inrhombohedral structure with R3?c space group. In addition to this structure, small amount of reflections belongsto GdMn2O5 phase is detected. Scanning electron microscope images show that the sample is constituted fromsquare shaped grains. Energy dispersive x-ray spectroscopy analysis shows that the sample includes all expectedelements. The sample exhibits magnetic phase transition from ferromagnetic to paramagnetic phase at around149 K temperature. Applied field dependence of magnetization under isothermal process M(H) shows that thenature of the phase transition is second order and maximum magnetic entropy change (-?SM) value calculatedfrom M(H) curves is found as 1.73 J/kgK under 50 kOe external magnetic field change.
Açıklama
Anahtar Kelimeler
Nanobilim ve Nanoteknoloji, Fizik, Katı Hal, Fizik, Atomik ve Moleküler Kimya, Fizikokimya, Kimya, İnorganik ve Nükleer
Kaynak
Cumhuriyet Science Journal
WoS Q Değeri
Scopus Q Değeri
Cilt
39
Sayı
2
