Biography
Dr. Ashwini Kumar
Dr. Ashwini Kumar
Luzhou Vocational and Technical College, China
Title: Advanced multifunctional multiferroic materials
Abstract: 

Multiferroic materials are materials that simultaneously exhibit more than one order, including magnetic, electrical, and elastic order. Magnetic order is usually driven by exchange interactions between magnetic dipoles, originating from unfilled electron orbital shells. The electrical order is the result of the ordering of the local electric dipoles. The elastic ordering is the result of the ordering of atomic displacements due to strain. The simultaneous occurrence of magnetic and electrical order is particularly interesting because it combines properties that can be used for information storage, processing and transmission. It allows magnetic and electric fields to interact with magnetic and electrical orders. Multiferroic materials have potential applications in important devices such as sensors and memory. Apart from BiFeO3, possess multiferroic above room temperature, other compounds (such as TbMnO3, HoMnO3, and RFeO3) that exist in nature or being synthesized exhibit multiferroic properties at extremely low temperatures. Moreover, the small magnetization and multiphase formation of BiFeO3 limit its use in practical applications. Therefore, it is necessary to design other promising room-temperature multiferroic materials, driven by both the desire to understand the mechanism and the technological need for better materials.

In this talk, the concept of multiferroic materials will be briefly introduced. We will explore important physical properties of these materials and review phase diagrams. We will also briefly discuss the advantages of multiferroics, recent advances in multiferroic discovery, and the future of multiferroics.

Biography: 

Dr. Ashwini Kumar, born in 1984.03, received his Ph.D. degree in Physics from Devi Ahilya University Indore – India in 2014. Currently, he is working as an Associate Professor at School of Electrical and Electronic Engineering, Luzhou Vocational and Technical College, Luzhou – China and Lead member of Luzhou Key Laboratory of Intelligent Control and Electronic Device Application Technology. He was a postdoctoral fellow at Southeast University, Nanjing (2015-2019) and worked in the field of multiferroic materials. He has published more than 30 research papers in internationally renowned SCI journals, as well as presented numerous papers at national and international conferences and seminars. Dr. Kumar is a recipient of the Fellowship from Madhya Pradesh Council of Science and Technology, Bhopal (India) for training of Young Scientist in 2014, a Young Scientist Award in the International Scientist Awards on Engineering, Science and Medicine by VDGOOD professional Association, India and a Best Paper Award (first prize) by Luzhou Chemistry and Chemical Society, Luzhou in 2021. He also served as Principal Investigator and presided over several national, provincial and municipal-level research projects, such as National Natural Science Foundation (NSFC) of the Foreign Youth Fund, Jiangsu province Postdoctoral Research Fund, Luzhou municipal Science and Technology research fund, and Central University Basic Innovative Research Funds, etc.  His research interest focused on the development and investigation of novel multifunctional materials, magnetoelectric multiferroic, perovskites-structured materials, microwave dielectric ceramics, ferroelectric, spinel ferrites, as well as oxide ceramics.