Next Article in Journal
Amorphous Phase Mediated Crystallization: Fundamentals of Biomineralization
Next Article in Special Issue
First-Principles Investigations of the Structural, Anisotropic Mechanical, Thermodynamic and Electronic Properties of the AlNi2Ti Compound
Previous Article in Journal
Monoclinic Paracetamol vs. Paracetamol-4,4′-Bipyridine Co-Crystal; What Is the Difference? A Charge Density Study
Previous Article in Special Issue
Impact of Annealing Temperature on the Physical Properties of the Lanthanum Deficiency Manganites
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Crystals 2018, 8(1), 45; https://doi.org/10.3390/cryst8010045

Effect of Sonication Output Power on the Crystal Structure and Magnetism of SrFe12O19 Nanoparticles

1
Área Académica de Ciencias de la Tierra y Materiales, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Pachuca C.P. 42184 Hidalgo, Mexico
2
Centro de Investigación e Innovación Tecnológica del Instituto Politécnico Nacional, Cerrada Cecati s/n, Col. Sta. Catarina, Azcapotzalco C.P. 02250, Ciudad de México, Mexico
*
Author to whom correspondence should be addressed.
Received: 24 November 2017 / Revised: 17 December 2017 / Accepted: 16 January 2018 / Published: 19 January 2018
(This article belongs to the Special Issue Crystal Structure of Magnetic Materials)
Full-Text   |   PDF [7632 KB, uploaded 19 January 2018]   |  

Abstract

We reported the effect of the sonication output power (SOP), from 120, 180, to 240 W, on the crystal structure, morphology, and magnetic properties of SrFe12O19 nanoparticles synthesized by sonochemical process assisted with heat treatment. X-ray Diffraction analysis of the obtained powder showed the formation of Fe3O4 with low crystallinity degree, which increased with the increase in SOP, together in a crystalline phase identified as SrCO3. The formation of SrFe12O19 started at 1073 K, and was completed at 1173 K. However, hexaferrite was obtained with the secondary phases α-Fe2O3 and SrFeO2.5. At 1323 K, the secondary phases vanished, and a single phase SrFe12O19 was detected. Vibrating Sample Magnetometry analysis showed that the SrFeO2.5 phase caused the formation of a hysteresis loop known as the Perminvar magnetic hysteresis loop. At 1323 K, the powder synthesized at 120 W showed a specific magnetization of 67.15 Am2/kg at 1.43 × 106 A/m, and coercivity of 4.69 × 104 A/m, with a spherical-like morphology and average particle size of 56.81 nm obtained by Scanning Electron Microscopy analysis. The increment of SOP promoted a high degree of crystallinity and decrease in crystal size. Additionally, it promoted the formation of secondary phases, induced agglomeration, and modified the morphology of the particles. View Full-Text
Keywords: strontium hexaferrite; SrFe12O19; sonochemical synthesis; sonication output power; magnetic nanoparticles; sonochemistry strontium hexaferrite; SrFe12O19; sonochemical synthesis; sonication output power; magnetic nanoparticles; sonochemistry
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Palomino Resendiz, R.L.; Sánchez De Jesús, F.; Cortés Escobedo, C.A.; Hernández Cruz, L.E.; Bolarín Miró, A.M. Effect of Sonication Output Power on the Crystal Structure and Magnetism of SrFe12O19 Nanoparticles. Crystals 2018, 8, 45.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top