Title
Raman spectroscopy investigation of vibrational mode of Sb2-xMnxTe3 nanocrystals in host glass
Date Issued
16 October 2022
Access level
metadata only access
Resource Type
journal article
Author(s)
Universidad Federal de Sao Paulo
Publisher(s)
Elsevier B.V.
Abstract
Vibrational modes property variations of diluted magnetic semiconductor nanocrystals of Sb2xMnxTe3 grown in a glass host system were investigated. Transmission electron microscopy images and energy dispersive X-ray analysis confirm the size, interplanar distance and composition of these NCs. Electronic paramagnetic resonance spectra confirm the incorporation of manganese ions in the Sb2Te3 crystal lattice due to the six absorption lines. Moreover, changes in Mn-Mn interactions are observed as xMn-concentration increases. The Raman- and IR-active vibrational modes of quintuple layer changes of the Sb2-xMnxTe3 NCs give strong evidence of the incorporation of Mn2+ ions in Sb2Te3 NCs.
Volume
805
Language
English
OCDE Knowledge area
Electroquímica
Física de partículas, Campos de la Física
Subjects
Scopus EID
2-s2.0-85135927363
Source
Chemical Physics Letters
ISSN of the container
00092614
Sponsor(s)
The authors gratefully acknowledge financial support from the following Brazilian agencies: MCT/CNPq (409359/2016-5), PDJ/CNPQ (151349/2020-7), Capes, Fapemig (APQ-00211-17), and Minas Gerais Chemistry Network (MG-CN), supported by Fapemig (project CEX-RED-00010-4). We are also thankful for the use of facilities for the TEM measurements at the Multi-User Laboratory of High Resolution Microscopy (LabMic), at the Goias Federal University and the Raman Spectroscopy at the Institute of Physics of the Federal University of Uberlândia.
Sources of information:
Directorio de Producción Científica
Scopus