Title :
Magnetocaloric effect and critical behavior in a disordered ferromagnet La0.7Sr0.3Mn0.9Ti0.1O3
Author :
Ho, T. ; Quach, D. ; Thanh, T. ; Phan, M. ; Phan, T. ; Yu, S.
Author_Institution :
Phys., Chungbuk Nat. Univ., Seoul, South Korea
Abstract :
In an attempt further understand the nature of magnetic interactions in these compounds, we prepared a polycrystalline sample La0.7Sr0.3Mn0.9Ti0.1O3, and then studied carefully their magnetocaloric effect and critical behavior based on analyzing the magnetization versus magnetic-field data, M(H). Here, La0.7Sr0.3Mn0.9Ti0.1O3 was prepared by conventional solid-state reaction at 1300 °C for 24 h in air. Magnetic measurements were performed on a superconducting quantum interference device magnetometer. Spin dynamics was also investigated by means of electron spin resonance (ESR) spectroscopy (a JES-TE300) working at 9.2 GHz.
Keywords :
crystal growth; exchange interactions (electron); lanthanum compounds; magnetisation; magnetocaloric effects; paramagnetic resonance; spin dynamics; strontium compounds; ESR spectroscopy; La0.7Sr0.3Mn0.9Ti0.1O3; critical behavior; disordered ferromagnet; electron spin resonance spectroscopy; frequency 9.2 GHz; magnetic field; magnetic interactions; magnetic measurements; magnetization; magnetocaloric effect; polycrystalline sample; solid-state reaction; spin dynamics; superconducting quantum interference device magnetometer; temperature 1300 degC; time 24 h; Frequency modulation; Magnetic analysis; Magnetic properties; Magnetic resonance; Magnetic susceptibility; Magnetometers; Superconducting magnets;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7156568
