A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Hydrothermal Synthesis of Ni3TeO6 and Cu3TeO6 Nanostructures for Magnetic and Photoconductivity Applications
Tekijät: Fernandez-Catala Javier, Singh Harishchandra, Wang Shubo B, Huhtinen Hannu, Paturi Petriina, Bai Yang, Cao Wei
Kustantaja: AMER CHEMICAL SOC
Julkaisuvuosi: 2023
Journal: ACS Applied Nano Materials
Tietokannassa oleva lehden nimi: ACS APPLIED NANO MATERIALS
Lehden akronyymi: ACS APPL NANO MATER
Vuosikerta: 6
Numero: 6
Aloitussivu: 4887
Lopetussivu: 4897
Sivujen määrä: 11
DOI: https://doi.org/10.1021/acsanm.3c00630
Verkko-osoite: https://pubs.acs.org/doi/10.1021/acsanm.3c00630
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/179198862
Despite great attention toward transition metal tellurates especially M3TeO6 (M = transition metal) in magnetoelectric applications, control on single phasic morphology-oriented growth of these tellurates at the nanoscale is still missing. Herein, a hydrothermal synthesis is performed to synthesize single-phased nanocrystals of two metal tellurates, i.e., Ni3TeO6 (NTO with average particle size similar to 37 nm) and Cu3TeO6 (CTO similar to 140 nm), using NaOH as an additive. This method favors the synthesis of pure NTO and CTO nanoparticles without the incorporation of Na at pH = 7 in MTO crystal structures such as Na2M2TeO6, as it happens in conventional synthesis approaches such as solid-state reaction and/or coprecipitation. Systematic characterization techniques utilizing in-house and synchrotron-based characterization methods for the morphological, structural, electronic, magnetic, and photoconductivity properties of nanomaterials showed the absence of Na in individual particulate single-phase MTO nanocrystals. Prepared MTO nanocrystals also exhibit slightly higher antiferromagnetic interactions (e.g., TN-NTO = 57 K and TN-CTO = 68 K) compared to previously reported MTO single crystals. Interestingly, NTO and CTO show not only a semiconducting nature but also photoconductivity. The proposed design scheme opens the door to any metal tellurates for controllable synthesis toward different applications. Moreover, the photoconductivity results of MTO nanomaterials prepared serve as a preliminary proof of concept for potential application as photodetectors.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
