Araştırma Makalesi
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(La0.8Gd0.2)0.85Ag0.15MnO3 Perovskit Manganit Sisteminde Gd Yer Değiştirmesinin Yapısal Manyetik ve Manyetokalorik Özellikleri Üzerine Etkisi

Yıl 2018, Cilt: 39 Sayı: 2, 406 - 412, 29.06.2018

Ahmet Ekicibil , Ali Osman Ayaş , Mustafa Akyol

https://doi.org/10.17776/csj.388985
Cited By: 1

Öz

Bu makalede, sol-jel yöntemi ile hazırlanan (La0.8Gd0.2)0.85Ag0.15MnO3
sisteminde Gd ile La yer değiştirmesinin yapısal, manyetik ve manyetokalorik
etkileri çalışılmıştır. Kristal yapı X-Işınları kırınım tekniği ile
araştırılmıştır ve bu teknik örneğin Rc uzay grubunda rombohedral yapıda olduğunu göstermiştir. Bu yapının
yanında GdMn2O5 yapısına ait çok küçük miktarda safsızlık
fazına ait yansımalar da tespit edilmiştir. Taramalı Elektron Mikroskobu
fotoğrafları örneğin kare yapılı taneciklerden oluştuğunu göstermektedir.
X-ışınları spektroskopisi analizleri ise örneğin tüm beklenen elementleri
içerdiğini göstermiştir. Sıcaklığa bağlı mıknatıslanma, M(T), ölçümleri
sıcaklığın artışıyla örneğin 149 K sıcaklıkta ferromanyetik fazdan paramanyetik
faza doğru bir manyetik faz geçişi sergilediğini göstermiştir. İzotermal
şartlarda yapılan, uygulanan alana bağlı mıknatıslanma, M(H), ölçümleri
faz geçişinin doğasının ikinci dereceden olduğunu göstermiştir ve M(H)
verisinden maksimum manyetik entropi değişim değeri, (-ΔSM),
50 kOe dış manyetik alan değişimi altında, 1.73 J/kgK olarak hesaplanmıştır. 

Anahtar Kelimeler

Perovskitler manyetik soğutma manyetokalorik etki manyetik entropi değişimi

Kaynakça

  • [10] A.J. Millis, P.B. Littlewood and B.I. Shraiman, Physical Review Letters 74 (1995) p. 5144.
  • [11] J.B. Goodenough, A. Wold, R.J. Arnott and N. Menyuk, Physical Review 124 (1961) p. 373.
  • [12] A. Selmi, R. M'Nassri, W. Cheikhrouhou-Koubaa, N.C. Boudjada and A. Cheikhrouhou, Journal of Alloys and Compounds 619 (2015) p. 627.
  • [13] C. Hao, B. Zhao, Y. Huang, G. Kuang and Y. Sun, Journal of Alloys and Compounds 509 (2011) p. 5877.
  • [14] R. M’nassri and A. Cheikhrouhou, Journal of Superconductivity and Novel Magnetism 27 (2014) p. 1463.
  • [15] R.M. nassri, W. Cheikhrouhou-Koubaa, M. Koubaa and A. Cheikhrouhou, IOP Conference Series: Materials Science and Engineering 28 (2012) p. 012050.
  • [16] R. M’nassri, W. Cheikhrouhou-Koubaa, N. Boudjada and A. Cheikhrouhou, Journal of Superconductivity and Novel Magnetism 26 (2013) p. 1429.
  • [17] A.O. Ayaş, M. Akyol and A. Ekicibil, (2016).
  • [18] A.O. Ayaş, M. Akyol, S. Kılıç Çetin, M. Kaya, İ. Dinçer, A. Ekicibil and Y. Elerman, Philosophical Magazine (2017) p. 1.
  • [19] A. Muñoz, J.A. Alonso, M.J. Martínez-Lope, V. Pomjakushin and G. André, Journal of Physics: Condensed Matter 24 (2012) p. 076003.
  • [1] K.A. Gschneidner and V.K. Pecharsky, Rare Earths: Science, Technology & Applications Iii (1996) p. 209.
  • [20] R.D. Shannon, Acta Crystallographica Section A 32 (1976) p. 751.
  • [21] P.A. Joy, P.S.A. Kumar and S.K. Date, Journal of Physics-Condensed Matter 10 (1998) p. 11049.
  • [22] S.K. Çetin, M. Acet, M. Güneş, A. Ekicibil and M. Farle, Journal of Alloys and Compounds 650 (2015) p. 285.
  • [23] E. Taşarkuyu, A. Coşkun, A.E. Irmak, S. Aktürk, G. Ünlü, Y. Samancıoğlu, A. Yücel, C. Sarıkürkçü, S. Aksoy and M. Acet, Journal of Alloys and Compounds 509 (2011) p. 3717.
  • [2] K.A. Gschneidner, V.K. Pecharsky, A.O. Pecharsky and C.B. Zimm, Recent developments in magnetic refrigeration, in Rare Earths '98, Woodward, R. C., ed., 1999, p. 69.
  • [3] A.M. Tishin, A.V. Derkach, Y.I. Spichkin, M.D. Kuz’min, A.S. Chernyshov, K.A. Gschneidner and V.K. Pecharsky, Journal of Magnetism and Magnetic Materials 310 (2007) p. 2800.
  • [4] A.O. Ayaş, M. Akyol, S.K. Çetin, G. Akça, A. Ekicibil and B. Özçelik, Journal of Superconductivity and Novel Magnetism 28 (2015) p. 1649.
  • [5] A.O. Ayaş, M. Akyol and A. Ekicibil, Philosophical Magazine 96 (2016) p. 922.
  • [6] A.M. Kılıç Çetin S., Güneş M., Ekicibil A., Farle M., Journal of Alloys and Compounds 650 (2015) p. 285.
  • [7] A.M. Tishin, Journal of Magnetism and Magnetic Materials 316 (2007) p. 351.
  • [8] M.-H. Phan and S.-C. Yu, Journal of Magnetism and Magnetic Materials 308 (2007) p. 325.
  • [9] C. Zener, Physical Review 82 (1951) p. 403.

Influence of Gd Substitution on Structural, Magnetic and Magnetocaloric Properties in (La0.8Gd0.2)0.85Ag0.15MnO3 Perovskite Manganite System

Yıl 2018, Cilt: 39 Sayı: 2, 406 - 412, 29.06.2018

Ahmet Ekicibil , Ali Osman Ayaş , Mustafa Akyol

https://doi.org/10.17776/csj.388985
Cited By: 1

Öz

In this paper, the effect of Gd substitution with La
on structural, magnetic and magnetocaloric properties in (La0.8Gd0.2)0.85Ag0.15MnO3
manganite sample prepared by sol-gel method has been studied. The crystal properties have been investigated by
x-ray diffraction technique that shows the
sample is in rhombohedral structure with Rc space
group. In addition to this structure, small amount of reflections belongs to
GdMn2O5 phase is detected. Scanning electron microscope
images show that the sample is constituted from square shaped grains. Energy
dispersive x-ray spectroscopy analysis shows that the sample includes all
expected elements. The sample exhibits magnetic phase
transition from ferromagnetic to paramagnetic phase at around 149 K
temperature. Applied field dependence of magnetization under isothermal process
M(H) shows that the nature of the phase transition is second order and
maximum magnetic entropy change (-ΔSM)
value calculated from M(H) curves
is found as 1.73 J/kgK under 50 kOe external magnetic field change.

Anahtar Kelimeler

magnetocaloric effect magnetic entropy change Perovskites magnetic cooling magnetic entropy change

Kaynakça

  • [10] A.J. Millis, P.B. Littlewood and B.I. Shraiman, Physical Review Letters 74 (1995) p. 5144.
  • [11] J.B. Goodenough, A. Wold, R.J. Arnott and N. Menyuk, Physical Review 124 (1961) p. 373.
  • [12] A. Selmi, R. M'Nassri, W. Cheikhrouhou-Koubaa, N.C. Boudjada and A. Cheikhrouhou, Journal of Alloys and Compounds 619 (2015) p. 627.
  • [13] C. Hao, B. Zhao, Y. Huang, G. Kuang and Y. Sun, Journal of Alloys and Compounds 509 (2011) p. 5877.
  • [14] R. M’nassri and A. Cheikhrouhou, Journal of Superconductivity and Novel Magnetism 27 (2014) p. 1463.
  • [15] R.M. nassri, W. Cheikhrouhou-Koubaa, M. Koubaa and A. Cheikhrouhou, IOP Conference Series: Materials Science and Engineering 28 (2012) p. 012050.
  • [16] R. M’nassri, W. Cheikhrouhou-Koubaa, N. Boudjada and A. Cheikhrouhou, Journal of Superconductivity and Novel Magnetism 26 (2013) p. 1429.
  • [17] A.O. Ayaş, M. Akyol and A. Ekicibil, (2016).
  • [18] A.O. Ayaş, M. Akyol, S. Kılıç Çetin, M. Kaya, İ. Dinçer, A. Ekicibil and Y. Elerman, Philosophical Magazine (2017) p. 1.
  • [19] A. Muñoz, J.A. Alonso, M.J. Martínez-Lope, V. Pomjakushin and G. André, Journal of Physics: Condensed Matter 24 (2012) p. 076003.
  • [1] K.A. Gschneidner and V.K. Pecharsky, Rare Earths: Science, Technology & Applications Iii (1996) p. 209.
  • [20] R.D. Shannon, Acta Crystallographica Section A 32 (1976) p. 751.
  • [21] P.A. Joy, P.S.A. Kumar and S.K. Date, Journal of Physics-Condensed Matter 10 (1998) p. 11049.
  • [22] S.K. Çetin, M. Acet, M. Güneş, A. Ekicibil and M. Farle, Journal of Alloys and Compounds 650 (2015) p. 285.
  • [23] E. Taşarkuyu, A. Coşkun, A.E. Irmak, S. Aktürk, G. Ünlü, Y. Samancıoğlu, A. Yücel, C. Sarıkürkçü, S. Aksoy and M. Acet, Journal of Alloys and Compounds 509 (2011) p. 3717.
  • [2] K.A. Gschneidner, V.K. Pecharsky, A.O. Pecharsky and C.B. Zimm, Recent developments in magnetic refrigeration, in Rare Earths '98, Woodward, R. C., ed., 1999, p. 69.
  • [3] A.M. Tishin, A.V. Derkach, Y.I. Spichkin, M.D. Kuz’min, A.S. Chernyshov, K.A. Gschneidner and V.K. Pecharsky, Journal of Magnetism and Magnetic Materials 310 (2007) p. 2800.
  • [4] A.O. Ayaş, M. Akyol, S.K. Çetin, G. Akça, A. Ekicibil and B. Özçelik, Journal of Superconductivity and Novel Magnetism 28 (2015) p. 1649.
  • [5] A.O. Ayaş, M. Akyol and A. Ekicibil, Philosophical Magazine 96 (2016) p. 922.
  • [6] A.M. Kılıç Çetin S., Güneş M., Ekicibil A., Farle M., Journal of Alloys and Compounds 650 (2015) p. 285.
  • [7] A.M. Tishin, Journal of Magnetism and Magnetic Materials 316 (2007) p. 351.
  • [8] M.-H. Phan and S.-C. Yu, Journal of Magnetism and Magnetic Materials 308 (2007) p. 325.
  • [9] C. Zener, Physical Review 82 (1951) p. 403.
Toplam 23 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Bölüm Natural Sciences
Yazarlar

Ahmet Ekicibil

Ali Osman Ayaş

Mustafa Akyol

Yayımlanma Tarihi 29 Haziran 2018
Gönderilme Tarihi 2 Şubat 2018
Kabul Tarihi 30 Nisan 2018
Yayımlandığı Sayı Yıl 2018Cilt: 39 Sayı: 2

Kaynak Göster

APA Ekicibil, A., Ayaş, A. O., & Akyol, M. (2018). Influence of Gd Substitution on Structural, Magnetic and Magnetocaloric Properties in (La0.8Gd0.2)0.85Ag0.15MnO3 Perovskite Manganite System. Cumhuriyet Science Journal, 39(2), 406-412. https://doi.org/10.17776/csj.388985

Cited By

Effect of Cr substitution on structural, magnetic, magnetocaloric and critical behaviors of La0.7Y0.05Ba0.25MnO3 perovskite manganite
Journal of Solid State Chemistry
https://doi.org/10.1016/j.jssc.2023.124481