Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 3 (2016) 2141–2145 www.materialstoday.com/proceedings 2214-7853© 2015 Elsevier Ltd.All rights reserved. Selection and Peer-review under responsibility of [Conference Committee Members of Recent Advances In Nano Science and Technology 2015. ]. Recent Advances In Nano Science And Technology 2015 (RAINSAT2015) Magnetic, dielectric, and ferroelectric properties in Bi 3+ -substituted Li 0.35 Zn 0.3 Fe 2.35 -xBi x O 4 (x = 0.1) nanocrystallites Susmita Misra*, Shanker Ram Materials Science Centre, IIT-Kharagpur, Kharagpur-721 302, India Abstract Bi 3+ -substituted Li 0.35 Zn 0.3 Bi x Fe 2.35-x O 4 (x = 0.1) nanocrystallites of ~32 nm synthesized via a citrate-gel combustion and then annealed at 400 °C for 2 h in air shows a saturation magnetization M s = 11.25 emu/g (with a high coercivity H c = 273 Oe) at 5 K. Frequency (f) dependence of dielectric properties describes a mechanism of polarization. Granular crystallites offers a high polarization P s = 1.956 μC/cm 2 at 9 kV/cm applied field. © 2015Elsevier Ltd.All rights reserved. Selection and Peer-review under responsibility of [Conference Committee Members of Recent Advances In Nano Science and Technology 2015.]. Keywords: Nanomaterials; Ferrites; Microstructure; Dielectrics; Ferrimagnetism 1. Introduction Li 0.35 Zn 0.5 Fe 2.35 O 4 spinel ferrite is widely used in high-frequency devices including microwave devices, telecommunication, memory core, transformer, noise filter, and recording heads due to their high electrical resistivity, saturation magnetization, and Curie temperature, large magneto-crystalline anisotropy constant, and good chemical stability [1-3]. However, reasonably high power loss causes a technical problem for their applications [4]. It can be resolved by introducing a diamagnetic ion such as Bi 3+ . Apart from reducing power loss, this ion creates a structural distortion which leads to a spontaneous polarization. Thus, a combined effect of magnetism, low power * Corresponding author.E-mail address: misra.susmita@gmail.com