Abstract
The origin of ferromagnetism in nanoparticles of polycrystalline Cd1−xMnxO (x = 0, 2%, 10%) prepared using co-precipitation method is presented. The XPS studies indicate the presence of oxygen vacancies along with mixed oxidation states of manganese (Mn4+ and Mn2+) and cadmium (Cd2+, Cd4+). The room temperature isothermal hysteresis measurements show that upon Mn doping, there is enhancement in ferromagnetic ordering and in coercivity of CdO nanoparticles. The zero-field-cooled and field-cooled magnetization as function of temperature indicates the presence of disordered magnetic structure, which may be due to the formation of bound magnetic polarons by mixed valance states of Mn cations and oxygen vacancies. The enhancement in dielectric constant with Mn substitution also points to the enhancement of space charge polarization and the frequency-dependent ac-conductivity indicates the small polarons hoping mechanism of conductivity.
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Tawfik, W.Z., Esmat, M., El-Dek, S.I.: Drastic improvement in magnetization of CdO nanoparticles by Fe doping. Appl. Nano. 7 (8), 863 (2017)
Ahmad, T., Khatoon, S., Coolahan, K., Lofland, S.E.: Structural characterization, optical and magnetic properties of Ni-doped CdO dilute magnetic semiconductor nanoparticles. J. Mater. Res. 28 (9), 1245 (2013)
Kumar, S., Layek, S., Yashpal, M.: and Animesh K Ojha: Room temperature ferromagnetism in undoped and Mn doped CdO nanostructures. J. Magn. Magn. Mater. 393, 555 (2015)
Chaurasiya, R., Dixit, A.: Point defects induced magnetism in CdO monolayer: a theoretical study. J. Magn. Magn. Mater. 469, 279 (2019)
Shatnawi, M., Alsmadi, A.M.: Influence of Mn doping on the magnetic and optical properties of ZnO nanocrystalline particles. Results in Physics. 6, 1064 (2016)
Nabi, Z., Amari, S., Mecabih, S., Zaoui, A., Abbar, B., Bouhafs, B.: and Rajeev Ahuja: Ferromagnetism in CdOX (X = Mn and N) with and without intrinsic point defects: a density functional theory. Results in Physics. 3, 205 (2013)
Antosoly, D., Ilangovan, S., Suganya, M., Balamurugan, S., Balu, A.R.: Optical and magnetic properties of CdO thin films doped with Ba2+ (cation) ions. Mater. Res. Innovations 22(4), 237 (2018)
Velusamy, P.: R Ramesh Babu, K Ramamurthi, E Elangovan, and J Viegas: Effect of La doping on the structural, optical and electrical properties of spray pyrolytically deposited CdO thin films. J. Alloy. Compd. 708, 804 (2017)
Ferro, R.: JA Rodrı́guez, O Vigil, and A Morales-Acevedo: Chemical composition and electrical conduction mechanism for CdO: F thin films deposited by spray pyrolysis. Mater. Sci. Eng., B 87(1), 83 (2001)
Dakhel, A.A.: Structural, optical, and magnetic studies of iodine-doped CdO nanopowders and films. J. Sol-Gel. Sci. Technol. 85(2), 311 (2018)
Wahab, L.A., Shalaby, M.S., Yousif, N.M., Hashim, H.M.: Structural, thermal and magnetic investigation of Mn-Doped CdO nanocrystals. Mater. Chem. Phys. 232, 325 (2019)
Ahmad, T., Khatoon, S., Coolahan, K., Lofland, S.E.: Solvothermal synthesis, optical and magnetic properties of nanocrystalline Cd1−xMnxO (0.04 < x = 0.10) solid solutions. J. Alloys Comp. 558, 117 (2013)
Beltrán, J.J., Barrero, C.A., Punnoose, A.: Understanding the role of iron in the magnetism of Fe doped ZnO nanoparticles. Phys. Chem. Chem. Phys. 17 (23), 15284 (2015)
Balamurugan, S., Balu, A.R., Narasimman, V., Selvan, G., Usharani, K., Srivind, J., Suganya, M., Manjula, N., Rajashree, C., Nagarethinam, V.S.: Multi metal oxide CdO–Al2O3–NiO nanocomposite—synthesis, photocatalytic and magnetic properties. Materials Research Express. 6(1), 015022 (2018)
Velusamy, P.: R Ramesh Babu, K Ramamurthi, J Viegas, and E Elangovan: Structural, microstructural, optical and electrical properties of spray deposited rare-earth metal(Sm) ions doped CdO thin films. J. Mater. Sci.: Mater. Electron. 26(6), 4152 (2015)
Maity, R., Chattopadhyay, K.K.: Synthesis and characterization of aluminium-doped CdO thin films by sol–gel process. Sol. Energy Mater Sol. Cells. 90 (5), 597 (2006)
Kumar, R.L., Kumar, R.: Structural and optical studies of Mn2+ substituted CdO nano-particles. Appl. Phys. A. 127, 249 (2021)
Chithira, P.R.: Teny Theresa John: Correlation among oxygen vacancy and doping concentration in controlling the properties of cobalt doped ZnO nanoparticles. J. Magn. Magn. Mater. 496, 165928 (2020)
Shatnawi, M., Alsmadi, A.M., Bsoul, I., Salameh, B., Mathai, M., Alnawashi, G., Bawa’aneh, M.S.: Influence of Mn doping on the magnetic and optical properties of ZnO nanocrystalline particles. Res. Phys. 6, 1064(2016)
Yang, S., Zhang, Y.: Structural, optical and magnetic properties of Mn-doped ZnO thin films prepared by sol–gel method. J. Magn. Magn. Mater. 334, 52 (2013)
Choudhury, B., Paul, S.: Gazi Ameen Ahmed, and Amarjyoti Choudhury: Adverse effect of Mn doping on the magnetic ordering in Mn doped TiO2 nanoparticles. Materials Research Express. 2(9), 096104 (2015)
Rayssi, C.H., Rhouma F.I.H., Dhahri, J., Khirouni, K., Zaidi, M.: Structural, electric and dielectric properties of Ca0.85Er0.1Ti1−xCo4x/3O3(0 ≤ x ≤ 0.1). Appl Phys. A. 123, 778 (2017)
Nayak, P., Badapanda, T.: Anil Kumar Singh, and Simanchalo Panigrahi: An approach for correlating the structural and electrical properties of Zr4+ modified SrBi4Ti4O15/SBT ceramic. RSC Adv. 7, 16319 (2017)
Makwana, P., Dhruv, D., Solanki, S., Boricha, H.: A Satyaprasad, M Ranjan: Modifications in structural, optical and electrical properties of nanocrystalline CdO: role of sintering temperature. J. Sol-Gel. Sci. Technol. 89, 866 (2019)
Suresh, S., Arunseshan, C.: Dielectric properties of cadmium selenide (CdSe) nanoparticles synthesized by solvothermal method. Appl. Nanosci. 4, 179 (2014)
Belkhaoui, C., Mzabi, N., Smaoui, H.: Investigations on structural, optical and dielectric properties of Mn doped ZnO nanoparticles synthesized by co-precipitation method. Mater. Res. Bull. 111, 70 (2019)
Kumar, B.R., Hymavathi, B., Rao, T.S.: Effect of the ceria dopant on the structural and dielectric properties of ZnO semiconductors. Journal of Science: Adv. Mater. Devices. 3, 433 (2018)
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Leelavati, Kumar, R. & Kumar, R. Origin of Ferromagnetism in Cd1−xMnxO Nanoparticles. J Supercond Nov Magn 35, 2851–2858 (2022). https://doi.org/10.1007/s10948-022-06324-3
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DOI: https://doi.org/10.1007/s10948-022-06324-3