Exchange Bias Effect in NiMnSbB Ferromagnetic Shape Memory Alloys Depending on Mn Content

Yıl 2021, Cilt: 11 Sayı: 2, 444 - 455, 31.12.2021

Gökhan Kırat

https://doi.org/10.37094/adyujsci.987045

Cited By: 2

Öz

In this study, exchange bias effect was investigated in boron added NiMnSb Heusler alloys. The samples were fabricated by arc melting method with Ni49Mn37,5Sb13,5+Bx, Ni49Mn37,7Sb13,3+Bx and Ni49Mn37,9Sb13,1+Bx nominal compositions. XRD analyzes showed that the samples were in L21 crystal structure at room temperature. While the martensitic phase transition temperatures increased, the magnetic moment value decreased with the increase in Mn content. The decrease in magnetization is owing to the increase in antiferromagnetic interactions with the increase of Mn content. Under low field and zero field cooling M-T measurements revealed that antiferromagnetic interactions were more dominant at low temperature but ferromagnetic behavior was more effective in the system at high temperature region. The coexistence of ferromagnetism and antiferromagnetism in a magnetic material can cause the exchange bias effect. Therefore, the hysteresis loops were examined at 5 K of the samples cooled under 50 kOe magnetic field. The shift at the origin of the magnetization curve, which is attributed to the exchange bias effect, increased with increasing Mn amount.

Anahtar Kelimeler

Ferromagnetic shape memory effect, NiMnSb Heusler alloys, exchange bias effect, antiferromagnetic interactions

Bor Eklenmiş NiMnSb Ferromanyetik Şekil Hatırlamalı Alaşımlarda Exchange Bias Etkisi

Öz

Bu çalışmada bor eklenmiş NiMnSb Heusler alaşımlarında exchange bias etkisi araştırılmıştır. Numuneler, Ni49Mn37.5Sb13.5+Bx, Ni49Mn37.7Sb13.3+Bx ve Ni49Mn37.9Sb13.1+Bx başlangıç kompozisyonunda ark ergitme yöntemiyle üretildi. XRD analizleri, örneklerin oda sıcaklığında L21 kristal yapısında olduğunu gösterdi. Mn içeriğinin artmasıyla martensitik faz geçiş sıcaklıkları artarken manyetik moment değeri azalmaktadır. Manyetizasyondaki azalma, Mn içeriğinin artmasıyla antiferromanyetik etkileşimlerdeki artıştan kaynaklanmaktadır. Düşük alan ve sıfır alan soğutması altındaki M-T ölçümleri, düşük sıcaklıkta antiferromanyetik etkileşimlerin daha baskın olduğunu, ancak yüksek sıcaklık bölgesinde sistemde ferromanyetik davranışın daha etkili olduğunu ortaya koydu. Manyetik bir malzemede ferromanyetizma ve antiferromanyetizmanın bir arada bulunması, exchange bias etkisine neden olabilir. Bu nedenle, 50 kOe manyetik alan altında soğutulan numunelerin 5 K’de histerezis döngüleri incelenmiştir. Exchange bias etkisine atfedilen manyetizasyon eğrisinin orijinindeki kayma, artan Mn miktarı ile artmıştır.

Anahtar Kelimeler

Ferromanyetik şekil hatırlama etkisi; NiMnSb Heusler alaşımları; Exchange bias etkisi; Antiferromanyetik etkileşimler.

Kaynakça

• [1] Asai, M., Suzuki, Y., Applications of shape memory alloys in Japan, Materials Science Forum, 327–328, 17–22, 2000.
• [2] Kirat, G., Kizilaslan, O., Aksan, M.A., Magnetoresistance properties of magnetic Ni-Mn-Sn-B shape memory ribbons and magnetic field sensor aspects operating at room temperature, Journal of Magnetism and Magnetic Materials, 477, 366–371, 2019.
• [3] Blachowicz, T., Ehrmann, A., Exchange bias in thin films—an update, Coatings, 11, 1–21, 2021.
• [4] Kirat, G., Aksan, M.A., Aydogdu, Y., Magnetic field induced martensitic transition in Fe doped Ni-Mn-Sn-B shape memory ribbons, Intermetallics, 111, 106493, 2019.
• [5] Sánchez Llamazares, J.L., Sanchez, T., Santos, J.D., Ṕrez, M.J., Sanchez, M.L., Hernando, B., Escoda, L., Suñol, J.J., Varga, R., Martensitic phase transformation in rapidly solidified Mn50 Ni40 In10 alloy ribbons, Applied Physics Letters, 92, 8–11, 2008.
• [6] Bachagha, T., Zhang, J., Sunol, J.J., Khitouni, M., Martensitic transformation and magnetic behavior in Mn-rich Heusler MnNiIn shape memory alloys, IOP Conference Series Materials Science and Engineering, 504, 012009, 2019.
• [7] Wang, B.M., Liu, Y., Wang, L., Huang, S.L., Zhao, Y., Yang, Y., Zhang, H., Exchange bias and its training effect in the martensitic state of bulk polycrystalline Ni49.5 Mn34.5 In16, Journal of Applied Physics, 104, 043916, 2008.
• [8] Yu, S.Y., Cao, Z.X., Ma, L., Liu, G.D., Chen, J.L., Wu, G.H., Realization of magnetic field-induced reversible martensitic transformation in NiCoMnGa alloys, Applied Physics Letters, 91, 102507, 2007.
• [9] Maziarz, W., Czaja, P., Wójcik, A., Dutkiewicz, J., Przewoźnik, J., Cesari, E., Microstructure and martensitic transformation of Ni50Mn37.5Sn12.5-xGex (X=0, 1, 2, 3) Heusler alloys produced by various Technologies, Materials Today: Proceedings, 2(3), S523–S528, 2015.
• [10] Yu, J.K., Li, H.W., Zhai, Q.J., Fu, J.X., Luo, Z.P., Zheng, H.X., Crystal structure and formation mechanism of the secondary phase in Heusler Ni-Mn-Sn-Co materials. Advances in Manufacturing, 2, 353–357, 2014.
• [11] Zelený, M., Straka, L., Sozinov, A., Heczko, O., Transformation paths from cubic to low-symmetry structures in Heusler Ni2MnGa compound, Scientific Reports, 8, 7275, 2018.
• [12] Wang, W.-H., Chen, J.-L., Liu, Z., Wu, G.-H., Zhan, W.-S., Thermal hysteresis and friction of phase boundary motion in ferromagnetic Ni52Mn23Ga25 single crystals, Physical Review B, 65, 012416, 2001.
• [13] Zheng, H., Wang, W., Xue, S., Zhai, Q., Frenzel, J., Luo, Z., Composition-dependent crystal structure and martensitic transformation in Heusler Ni–Mn–Sn alloys, Acta Materialia, 61, 4648–4656, 2013.
• [14] Kübler, J., William, A.R., Sommers, C.B., Formation and coupling of magnetic moments in Heusler alloys, Physical Review B, 28, 1745–1755, 1983.
• [15] Luo, H., Meng, F., Jiang, Q., Liu, H., Liu, E., Wu, G., Wang, Y., Effect of boron on the martensitic transformation and magnetic properties of Ni50Mn36.5Sb13.5−xBx alloys, Scripta Materialia, 63(6), 569–572, 2010.
• [16] Hernando, B., Llamazares, J.L.S., Santos, J.D., Sánchez, M.L., Escoda, L., Suñol, J.J., Varga, R., García, C., González, J., Grain oriented NiMnSn and NiMnIn Heusler alloys ribbons produced by melt spinning: Martensitic transformation and magnetic properties, Journal of Magnetism and Magnetic Materials, 321(7), 763–768, 2009.
• [17] Stamps, R.L., Mechanisms for exchange bias, Journal of Physics D: Applied Physics, 33(23), R247–R268, 2000.
• [18] Czaja, P., Przewoźnik, J., Fitta, M., Bałanda, M., Chrobak, A., Kania, B., Zackiewicz, P., Wójcik, A., Szlezynger, M., Maziarz, W., Effect of ball milling and thermal treatment on exchange bias and magnetocaloric properties of Ni48Mn39.5Sn10.5Al2 ribbons, Journal of Magnetism and Magnetic Materials, 401, 223–230, 2016.
• [19] Acet, M., Mañosa, L., Planes, A., Magnetic-Field-Induced effects in martensitic Heusler-based magnetic shape memory alloys, Handbook of Magnetic Materials, 19, 231–289, 2011.
• [20] Li, S., Wang, S., Lu, Y., Zhang, C., Yang, X., Gao, J., Li, D., Zhu, Y., Liu, W., Exchange bias effect in hybrid improper ferroelectricity Ca2.94Na0.06 Mn2O7, AIP Advances, 8, 015009, 2018.
• [21] Wang, R.L., Lee, M.K., Xu, L.S., Sun, Z.G., Marchenkov, V. V., Tien, C., Huang, J.C.A., Yang, C.P., Effect of thermal cycle on the interfacial antiferromagnetic spin configuration and exchange bias in Ni-Mn-Sb alloy, AIP Advances, 2, 032181, 2012.
• [22] Fertman, E.L., Fedorchenko, A. V., Desnenko, V.A., Shvartsman, V. V., Lupascu, D.C., Salamon, S., Wende, H., Vaisburd, A.I., Stanulis, A., Ramanauskas, R., Olekhnovich, N.M., Pushkarev, A. V., Radyush, Y. V., Khalyavin, D.D., Salak, A.N., Exchange bias effect in bulk multiferroic BiFe0.5Sc0.5O3, AIP Advances, 10, 045102, 2020.
• [23] Abulyazied, D.E., Abomostafa, H.M., El komy, G.M., Magnetic structured nickel core-shell @ silica/PMMA nanocomposites from synthesis to applications, Journal of Inorganic and Organometallic Polymers and Materials, 30, 2335–2346, 2020.