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

Ahmet Ekicibil; Ali Osman Ayaş; Mustafa Akyol

doi:10.17776/csj.388985

Research Article

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

Year 2018, , 406 - 412, 29.06.2018

Ahmet Ekicibil , Ali Osman Ayaş , Mustafa Akyol

https://doi.org/10.17776/csj.388985

Cited By: 1

Abstract

Bu makalede, sol-jel yöntemi ile hazırlanan (La_0.8Gd_0.2)_0.85Ag_0.15MnO₃
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, (-ΔS_M),
50 kOe dış manyetik alan değişimi altında, 1.73 J/kgK olarak hesaplanmıştır.

Keywords

Perovskitler, manyetik soğutma, manyetokalorik etki, manyetik entropi değişimi

References

[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

Year 2018, , 406 - 412, 29.06.2018

Ahmet Ekicibil , Ali Osman Ayaş , Mustafa Akyol

https://doi.org/10.17776/csj.388985

Cited By: 1

Abstract

In this paper, the effect of Gd substitution with La
on structural, magnetic and magnetocaloric properties in (La_0.8Gd_0.2)_0.85Ag_0.15MnO₃
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 (-ΔS_M)
value calculated from M(H) curves
is found as 1.73 J/kgK under 50 kOe external magnetic field change.

Keywords

magnetocaloric effect, magnetic entropy change, Perovskites, magnetic cooling, magnetic entropy change

References

[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.

There are 23 citations in total.

Details

Primary Language	English
Journal Section	Natural Sciences
Authors	Ahmet Ekicibil Ali Osman Ayaş Mustafa Akyol
Publication Date	June 29, 2018
Submission Date	February 2, 2018
Acceptance Date	April 30, 2018
Published in Issue	Year 2018

Cite

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

Cumhuriyet Science Journal

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

Abstract

Keywords

References

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

Abstract

Keywords

References

Details

Cite

Cited By

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