Structural Aspects LiNbO3 Nanoparticles and Their Ferromagnetic Properties

Materials

Carlos A. Diaz-Moreno²  Rurik Farias-Mancilla⁴  Jose T. Elizalde-Galindo⁴  Jesus González-Hernández¹  Abel Hurtado-Macias¹  Daniel Bahena³  Miguel José-Yacamán³  Manuel Ramos⁴ 

[1] Centro de Investigación en Materiales Avanzados S.C., Laboratorio Nacional de Nanotecnología, Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua, Apdo. Postal 31109, Mexico; E-Mails:;Materials Research and Technology Institute, University of Texas at El Paso, 500 W, University Ave, El Paso, TX 79968, USA; E-Mail:;Kleberg Advanced Microscopy Center, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA; E-Mails:;Departamento de Física y Matemáticas, Instituto de Ingeniería y Tecnología, Universidad Autónoma de Cd. Juárez, Avenida del Charro #450 N. Cd. Juárez, Chihuahua, C.P. 32310, Mexico; E-Mails:

关键词: scanning transmission electron microscopy (STEM);    nanoparticles;    lithium niobate;    ferroelectric;    ferromagnetic;   

DOI  :  10.3390/ma7117217

来源: mdpi

【 摘 要 】

We present a solid-state synthesis of ferromagnetic lithium niobate nanoparticles (LiNbO₃) and their corresponding structural aspects. In order to investigate the effect of heat treatments, two batches of samples with a heat-treated (HT) and non-heat-treated (nHT) reduction at 650 °C in 5% of hydrogen/argon were considered to investigate the multiferroic properties and their corresponding structural aspects; using magnetometry and scanning transmission electron microscopy (STEM). Results indicate the existence of ferromagnetic domains with a magnetic moment per unit cell of 5.24 × 10⁻³ μB; caused mainly due to voids and defects on the nanoparticle surface, as confirmed by STEM measurements.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.