Search Results - "TOMASZEWSKI, Paweł E."

Comments on the paper on the properties of Ca-doped BaFe0.5Nb0.5O3 by R. Chakravarty et al., and published in Applied Physics A 128, 647 (2022) by Tomaszewski, Paweł E.

“…My comments concern some errors in the crystallographic part of the commented paper. The diffraction patterns are erroneously analysed and the final data on…”
Get full text

Comments on the paper “Structural, dielectric, thermal and electrical characteristics of lead-free double perovskite: BiHoZnCeO6” by M. Padhy, S.K. Dehury, R.N.P. Choudhary, and P.G.R. Achary, and published in Applied Physics A (2020) 126:655 by Tomaszewski, Paweł E.

“…My comments concern the error in the lattice parameters and chemical composition of BiHoZnCeO 6 perovskite published in the commented paper. The most probable…”
Get full text

Comment on the paper “Multiferroic and optical spectroscopic behavior of BST in BFO environment” by B. Mohanty et al by Tomaszewski, Paweł E.

“…My comments concern the significant errors in the crystallographic part of the commented paper [J. Mater. Sci.: Mater. Electron. (2019) 30, 9211]. Moreover,…”
Get full text

Comments on the erroneous diffraction structure analysis presented in the paper on BaFe0.5Nb0.5O3:Mg ceramics by R. Chakravarty et al., and published in J. Mater. Sci.: Mater. Electron. (2023) 34:1452 by Tomaszewski, Paweł E.

“…My comments concern the uncertainties in the crystallographic part of the commented paper. The lattice parameters are incorrectly evaluated and the symmetry is…”
Get full text

Comments on the erroneous calculations presented in the paper on “Dielectric and impedance spectroscopy of barium orthovanadate ceramics, J. Mater. Sci.: Mater. Electron. 24, 1608 (2013)” by Tomaszewski, Paweł E.

“…This comment is on errors involved in the evaluation of lattice parameters in the paper by B. Pati et al . , J. Mater. Sci.: Mater. Electron. 24, 1608 (2013)…”
Get full text

Comments on the paper on the double doped BiFeO3 crystal by Nitin Kumar et al., and published in J. Alloy. Compd. 688, (2016) 858 by Tomaszewski, Paweł E.

“…My comments concern the significant error in the crystallographic part of the commented paper. It was discovered that the studied crystals are of sillenite…”
Get full text

Comment on the paper by B. Mohanty et al. on the BLFO ceramics [J. Alloy. Compd. 863 (2021) 158060] by Tomaszewski, Paweł E.

“…My comments concern the significant errors in the crystallographic part of the commented paper…”
Get full text

Comments on structural and electrical analysis of polycrystalline ceramic PbCaBiNbO6 by A.K. Panda et al. [J. Mater. Sci.: Mater. Elektron. 34, 1640 (2023)] by Tomaszewski, Paweł E.

“…My comments concern the errors in the crystallographic part of a recent paper published in this journal entitled “Structural and electrical analysis of…”
Get full text

Comments on the paper on the Nd-doped BiFeO3 by S. R. Dhanya and Jyotirmayee Satapathy, and published in J Mater Sci: Mater Electron (2023) 34:434, and on the corresponding correction published in J Mater Sci: Mater Electron (2023) 34:1484 by Tomaszewski, Paweł E.

Get full text

Comments on the paper on Ca-modified double perovskite Ba2FeVO6 by S. Bhattacharjee et al. And published in Physica B 624 (2022) 413373 by Tomaszewski, Paweł E.

“…The author of this Comment is concerned with severe errors in the crystallographic part of the commented paper. The actual composition of the crystals studied…”
Get full text

Comments on the paper Study of effect of Gd substitution at the Fe site on structural, dielectric and electrical characteristics of BiFeO3 by L. Thansanga et al. (Appl. Phys. A. 125, 764 (2019)) by Tomaszewski, Paweł E.

“…My comments concern the severe errors in the crystallographic part of the commented paper. The correct formula is proposed to be Bi 1-x Gd x FeO 3 instead of…”
Get full text

Comments on the paper “Effect of Sr substitution on the structural properties of LaCrO3 perovskite” by R. Kumar, K. Dev Singh, and R. Kumar, and published in J. Mater. Sci.: Mater. Electron. 33, 12039 (2022) by Tomaszewski, Paweł E.

“…This comment argues that the paper published by R. Kumar, K. Dev Singh, and R. Kumar, entitled “Effect of Sr substitution on the structural properties of LaCrO…”
Get full text

Comments on the paper on the properties of BaFe0.5Nb0.5O3 by R. Chakravarty et al., and published in Phase Transitions 95, 163 (2022) by Tomaszewski, Paweł E.

“…My comments concern the significant errors in the crystallographic part of the commented paper. The diffraction patterns are erroneously analysed and the final…”
Get full text

Size-induced phase transitions by Tomaszewski, Paweł E.

“…This paper presents a holistic view of the structural phase transitions in nanocrystals. The databases for size-induced phase transitions is a main part of…”
Get full text

Size-induced structural phase transition in nanocrystalline CaYTiNbO7:Eu: comments on the paper by Mahesh and Rao (J. Mater. Sci.: Mater. Electron. 31, 20,847 (2020)) by Tomaszewski, Paweł E.

“…The new analysis of the previously published data on the nanocrystalline CaYTiNbO 7 :Eu indicates an occurrence of the size-induced structural phase transition…”
Get full text

Comment on analysis of X-ray diffraction data in the paper “Structural and size dependence magnetic properties of Mn-doped NiO nanoparticles prepared by wet chemical method" by C. Thangamani et al. [J. Mater. Sci: Mater. Electron. 31, 11101 (2020)] by Tomaszewski, Paweł E.

“…In the commented paper, there are some questionable data which should be explained or corrected by the Authors, Thangamani et al. In this comment, I have tried…”
Get full text

Phase diagram for nanocrystals by Tomaszewski, Paweł E.

“…The new form of the phase diagram is proposed for nanocrystals. This island diagram shows the regions of the calcination temperature required to obtain the…”
Get full text

Comment on the paper by S. K. Parida on the effect of Cu and W dopants in CaMnO3 ceramics [Phase Transitions 94, 1033 (2021)] by Tomaszewski, Paweł E.

“…My comments concern the significant errors in the crystallographic part of the commented paper…”
Get full text

Comment on the paper "Preparation method and cerium dopant effect on the properties of BaMnO3 single perovskite" by S.K. Parida and R.N.P. Choudhary published in "Phase Transitions" 93, 981 (2020) by Tomaszewski, Paweł E.

“…I would like to comment the crystallographic part of the paper by Santosh Kumor Parida and Rama Narayan Prasad Choudhary entitled 'Preparation method and…”
Get full text

Comments on “Photodegradation of methyl violet dye using ZnO nanorods” by I. Kartharinal Punithavathy, J. Prince Richard, S. Johnson Jeyakumar, M. Jothibas, P. Praveen, J. Mater. Sci.: Mater. Electron. 28, 2494–2501 (2017) by Tomaszewski, Paweł E.

Get full text