Crystallographic and magnetic phase stabilities of NiFe 2 O 4 nanoparticles at shocked conditions
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Crystallographic and magnetic phase stabilities of NiFe2O4 nanoparticles at shocked conditions V. Mowlika1 · C. S. Naveen2 · A. R. Phani2 · A. Sivakumar3 · S. A. Martin Britto Dhas3 · R. Robert1 Received: 7 May 2020 / Accepted: 18 July 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In the present article, we have reported the crystallographic and magnetic phase stabilities of nickel ferrite nano particles (NiFe2O4 NPs) at different number of shock wave-loaded conditions. Series of shock pulses have been loaded on the test samples such as 50,100 and 150 shock pulses with Mach number 2.2. Powder X-ray diffractometer (XRD), diffused reflectance spectroscopy (DRS) and vibrating-sample magnetometer (VSM) are utilized to examine the crystallographic, electronic and magnetic phase stabilities. The observed XRD, DRS and VSM results indicated that no crystallographic, electronic and magnetic phase transitions occurred by the impact of shock waves. Fascinatingly, SEM images show the shock wave assisted shape modification at 150 shocks. The accomplished magnetic phase stability results have compared with our previous report on Fe2O3 NPs for better understanding the structure-property stabilities of title ferrite against the impact of shock waves. Based on the observed results, we wish to suggest that the title material is a suitable candidate for high pressure, high temperature applications and for aerospace applications due to the outstanding shock resistance properties.
1 Introduction In recent years, we have noticed that there is significant effort made by the materials scientists and device engineers to make the efficient materials for device application for ambient and non-ambient conditions applications. For the ambient condition applications, we have a minor requirement of structure–property relationship against the high pressure and high temperature. But controversy, we should be aware of the structure–property relationship under the high pressure and high temperature applications such as aerospace applications, thermal protecting systems and military applications. Because, most of the materials show the magnificent changes in their physical and chemical properties under high pressure and high temperature conditions [1–4]. Hence, understanding the materials properties including structural, thermal, optical, electrical and magnetic properties under * R. Robert [email protected] 1
PG & Research, Department of Physics, Govt. Arts College for Men, Krishnagiri, Tamilnadu 635 001, India
2
Innovative Nano and Micro Technologies Private Limited, Bangalore, Karnataka 560 059, India
3
Department of Physics, Abdul Kalam Research Center, Sacred Heart College, Tirupattur, Tamilnadu 635 601, India
extreme high pressure and temperature conditions are highly required to choose the efficient materials for above-mentioned applications. Moreover, these kinds of experiments put a pay way to deeply understating the material properties in applied physics and materials science p
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