Investigations on Spintronic RFeO3 Crystals Grown by Optical Floating Zone Technique

作     者：Babu, P. Ramesh Kalainathan, S. Yoshimura, Satoru 

作者机构：Department of Electronics and Communication Systems Sri Krishna Arts and Science College Tamil Nadu Coimbatore India Centre for Nano technology Research VIT University Tamil Nadu Vellore India Research Center of Advanced Materials for Breakthrough Technology Graduate School of Engineering Science Akita University Akita Japan 

出 版 物：《International Journal of the Society of Material Engineering for Resources》 (Int. J. Soc. Mater. Eng. Resour.)

年 卷 期：2022年第25卷第2期

页      面：179-182页

核心收录：

学科分类：0808[工学-电气工程] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

主　　题：Magnetic properties 

摘      要：Magnetic materials are in great demand for magnetic devices such as memory, sensing, and communication applications. Magnetic crystals are physically important to know their intrinsic magnetic properties. Magnetic crystals are also technologically important and their creation has aided crystal growth signifi cantly. Rareearth orthoferrites material (RFeO3) is one of the major components used in manufacturing sophisticated gadgets. This study focuses on the growth and physical properties of the optically generated RFeO3 (R = Y, Gd and Sm) single crystals. The fl oating zone method generates single crystals of 3-20 mm/h in the optical zone. The purity of the grown materials was confi rmed from the Powder X-Ray Diff raction (PXRD) analysis. The addition of Gd to YFeO3 increases the lattice parameters of the material. Magnetic properties of the grown crystal were studied between 20-700 K. At high temperature, two anomalous eff ects were observed, one at (TSR = 480 K) due to spin reorientation and the other is antiferromagnetic (AFM) to paramagnetic transitions at (TN = 670 K). Bloch parameter was also calculated. Microhardness value decreases nonlinearly. When the applied load is greater than 1.96 N, there is a transition from palmqvist to median crack due to the plastic deformation of the crystal. Controllable magnetic and mechanical characteristics will help to enhance performance of magnetic devices. © 2022 Soc. Mater. Eng. Resour. Japan.