Retraction Note to: Fabrication and characterization of Mg 3 Y 2 Ga 3 O 12 :Bi 3+ /TiO 2 -based UV fluorescent compositi

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RETRACTION NOTE

Retraction Note to: Fabrication and characterization of ­Mg3Y2Ga3O12:Bi3+/TiO2‑based UV fluorescent composition for improving the heavy oil viscosity reduction Peizhang Xie1 · Xinxing Wang2 · Ming Liu2

© Springer-Verlag GmbH Germany, part of Springer Nature 2020

Retraction note to: Applied Physics A (2019) 125:342 https​://doi.org/10.1007/s0033​9-019-2628-3

The authors have retracted this article [1] because the subject matter of this study was C ­ aY2Ge3O10:Bi3+ not 3+ ­Mg3Y2Ga3O12:Bi as stated in the title and throughout the paper, which invalidates the figures and conclusions presented in the article. This error has been confirmed by the authors who have supplied the figure of the XRD pattern of ­CaY2Ge3O10 which is different from Fig. 1 in the original paper. Figure 2 in the original paper shows the SEM–EDX image which is incorrect as the material in the original paper is stated to be composed of Mg, Y, Ga, O and Bi, but the actual composition is Ca, Y, Ge, O and Bi. Therefore, the conclusions of this article are incorrect. Author Peizhang Xie has stated on behalf of all co-authors that they agree to this retraction.

Reference 1. P. Xie, X. Wang, M. Liu, Fabrication and characterization of ­Mg3Y2Ga3O12:Bi3+/TiO2-based UV fluorescent composition for improving the heavy oil viscosity reduction. Appl. Phys. A 125, 342 (2019). https​://doi.org/10.1007/s0033​9-019-2628-3 Publisher’s Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

The original article can be found online at https​://doi.org/10.1007/ s0033​9-019-2628-3. * Peizhang Xie [email protected] * Xinxing Wang [email protected] 1



Nanjing Institute of Product Quality Inspection, Nanjing 21012, China



College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning University of Petroleum and Chemical Technology, Fushun 113001, Liaoning, China

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