Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites

Selda KILIÇ ÇETİN, (Çukurova Üniversitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, Adana, Türkiye)
Gönül AKÇA, (Çukurova Üniversitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, Adana, Türkiye)
Mehmet Selim ASLAN, (Çukurova Üniversitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, Adana, Türkiye)
Ahmet EKİCİBİL (Çukurova Üniversitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, Adana, Türkiye)
Adıyaman Üniversitesi Fen Bilimleri Dergisi
6 0
Yıl: 2022 Cilt: 12 Sayı: 1 Sayfa Aralığı: 142 - 161 Metin Dili: İngilizce DOI: 10.37094/adyujsci.1113239 İndeks Tarihi: 10-08-2022

Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites

Öz:
In present study, the effects of copper substitution on the magnetic and magnetocaloric properties of La0.7Sr0.3Mn1-xCuxO3 manganite samples were investigated. La0.7Sr0.3Mn1-xCuxO3 samples were obtained by using sol-gel method. X-ray diffraction analyses were performed to determine structural properties such as lattice parameters and crystal structure. The crystal structure of the samples is rhombohedral with space group 𝑅3𝑐. The Cu substitution to the Mn- site causes a decrease in the magnetic phase transition temperature (TC) of the samples. By using Banerjee criterion and Landau theory, the type of magnetic phase transition is determined as second order. From isothermal magnetization measurements, magnetic entropy change (-∆𝑆() values were calculated for different magnetic field changes of the samples. The maximum magnetic entropy change value (-∆𝑆(*+,) determined from the temperature dependence of -∆𝑆( curves for the samples is 3.39 and 2.78 JKg-1K-1 under 5 T, respectively. Relative cooling power (RCP) values of the samples were found as 249.52 and 111.98 Jkg-1 for 5 T, respectively.
Anahtar Kelime: ; Magnetic entropy change Magnetic refrigeration Curie temperature Landau theory Manganite

Mn Bölgesine Bakır Katkılamasının La0.7Sr0.3Mn1-xCuxO3 Manganitlerinin Manyetik ve Manyetokalorik Özellikleri Üzerindeki Etkileri

Öz:
Bu çalışmada, Cu katkılamasının La0.7Sr0.3Mn1-xCuxO3 manganit numunelerinin manyetik ve manyetokalorik özelliklerine etkileri incelenmiştir. La0.7Sr0.3Mn1-xCuxO3 numuneleri sol-jel tekniği kullanılarak elde edilmiştir. Örgü parametreleri ve kristal yapı gibi yapısal parametreleri belirlemek için x-ışını kırınım analizleri yapılmıştır. Numunelerin kristal yapısı, 𝑅3𝑐 uzay grubu ile rombohedraldir. Mn bölgesindeki Cu katkılamasının manyetik faz geçiş sıcaklığını (TC) düşürdüğü gözlenmiştir. Banerjee kriteri ve Landau teorisi kullanılarak manyetik faz geçişinin türü ikinci dereceden olarak belirlenmiştir. İzotermal manyetizasyon ölçümlerinden numunelerin farklı manyetik alan değişimleri için manyetik entropi değişimi (-∆S() değerleri hesaplanmıştır. Sıcaklığa bağlı -∆𝑆( eğrilerinden belirlenen maksimum manyetik entropi değişim (-∆𝑆( *+,) değeri 5 T altında örnekler için sırasıyla 3.39 ve 2.78 Jkg-1K-1’ dir. Örneklerin bağıl soğutma gücü (RCP) değerleri 5 T için sırasıyla 249.52 ve 111.98 Jkg-1 olarak bulunmuştur.
Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA KILIÇ ÇETİN s, Akça G, Aslan M, Ekicibil A (2022). Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites. , 142 - 161. 10.37094/adyujsci.1113239
Chicago KILIÇ ÇETİN selda,Akça Gönül,Aslan Mehmet Selim,Ekicibil Ahmet Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites. (2022): 142 - 161. 10.37094/adyujsci.1113239
MLA KILIÇ ÇETİN selda,Akça Gönül,Aslan Mehmet Selim,Ekicibil Ahmet Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites. , 2022, ss.142 - 161. 10.37094/adyujsci.1113239
AMA KILIÇ ÇETİN s,Akça G,Aslan M,Ekicibil A Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites. . 2022; 142 - 161. 10.37094/adyujsci.1113239
Vancouver KILIÇ ÇETİN s,Akça G,Aslan M,Ekicibil A Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites. . 2022; 142 - 161. 10.37094/adyujsci.1113239
IEEE KILIÇ ÇETİN s,Akça G,Aslan M,Ekicibil A "Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites." , ss.142 - 161, 2022. 10.37094/adyujsci.1113239
ISNAD KILIÇ ÇETİN, selda vd. "Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites". (2022), 142-161. https://doi.org/10.37094/adyujsci.1113239
APA KILIÇ ÇETİN s, Akça G, Aslan M, Ekicibil A (2022). Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites. Adıyaman Üniversitesi Fen Bilimleri Dergisi, 12(1), 142 - 161. 10.37094/adyujsci.1113239
Chicago KILIÇ ÇETİN selda,Akça Gönül,Aslan Mehmet Selim,Ekicibil Ahmet Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites. Adıyaman Üniversitesi Fen Bilimleri Dergisi 12, no.1 (2022): 142 - 161. 10.37094/adyujsci.1113239
MLA KILIÇ ÇETİN selda,Akça Gönül,Aslan Mehmet Selim,Ekicibil Ahmet Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites. Adıyaman Üniversitesi Fen Bilimleri Dergisi, vol.12, no.1, 2022, ss.142 - 161. 10.37094/adyujsci.1113239
AMA KILIÇ ÇETİN s,Akça G,Aslan M,Ekicibil A Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites. Adıyaman Üniversitesi Fen Bilimleri Dergisi. 2022; 12(1): 142 - 161. 10.37094/adyujsci.1113239
Vancouver KILIÇ ÇETİN s,Akça G,Aslan M,Ekicibil A Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites. Adıyaman Üniversitesi Fen Bilimleri Dergisi. 2022; 12(1): 142 - 161. 10.37094/adyujsci.1113239
IEEE KILIÇ ÇETİN s,Akça G,Aslan M,Ekicibil A "Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites." Adıyaman Üniversitesi Fen Bilimleri Dergisi, 12, ss.142 - 161, 2022. 10.37094/adyujsci.1113239
ISNAD KILIÇ ÇETİN, selda vd. "Effects of Copper Substitution to Mn-site on Magnetic and Magnetocaloric Properties of La0.7Sr0.3Mn1-xCuxO3 Manganites". Adıyaman Üniversitesi Fen Bilimleri Dergisi 12/1 (2022), 142-161. https://doi.org/10.37094/adyujsci.1113239
Sayfa Oluşturulma Tarihi
24-04-2024 2:16

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