Understanding physical chemistry of BaxSr1−xTiO3 using ReaxFF molecular dynamics simulations (publisher proof PDF)

PDF variant

RSC layout proof (d1cp03353k). Full article text: 2021akbarian-physical-che-understanding-physical (papers/Akbarian_BaSrTiO3_PCCP_2021.pdf).

Summary¶

The proof PDF papers/Akbarian_BaSrTiO3_PCCP_2021_galley.pdf belongs to the PCCP article DOI 10.1039/D1CP03353K, “Understanding physical chemistry of BaₓSr₁₋ₓTiO₃ using ReaxFF molecular dynamics simulations.” The extract (normalized/extracts/2021akbarian-venue-paper_p1-2.txt) is dominated by RSC layout proof instructions (online proofing interface, “Edit” button workflow, note that online changes may not appear in the PDF proof). It also includes the graphical abstract text block: “Understanding physical chemistry of BaₓSr₁₋ₓTiO₃ using ReaxFF molecular dynamics simulations” by Dooman Akbarian, Nadire Nayir, and Adri C. T. van Duin, stating that barium strontium titanate BSTO is widely used in nanodevices for ferroelectric properties and can be epitaxially grown on SrTiO₃ (STO) supports to reduce lattice and thermal mismatch. The full scientific narrative—DFT training on bulk, vacancy, and surface data; MD exploration of composition, oxygen vacancies, transition temperatures, polarization, and water on TiO₂-terminated surfaces—is curated on 2021akbarian-physical-che-understanding-physical because the galley text layer foregrounds publisher workflow over continuous article sections.

Methods¶

N/A to re-derive from this proof extract; the ReaxFF training narrative and DFT reference data are given on 2021akbarian-physical-che-understanding-physical and the VOR PDF (see §C below for a pointer).

B — Molecular dynamics, experiments, protocols, and sampling¶

N/A on this layout-proof slug to recover MD run cards; use 2021akbarian-physical-che-understanding-physical and the VOR PDF for LAMMPS ReaxFF protocols (PBC, fs timestep, K temperatures, ps/ns duration, NVT/NPT, thermostat/barostat).

C — Electronic structure / static QM (when reported separately from MD)¶

ReaxFF energy decomposition, DFT reference sets for STO/BSTO equations of state and defects, and production MD protocols are described on the version-of-record page. The proof extract instead lists operator checklists: author names and affiliations, funding table completeness, editor queries answered, and attachments such as ESI files—useful for provenance auditing but not a substitute for simulation parameters. This duplicate slug should not be used to recover numerical training matrices or thermostat settings.

D — Review scope, SI/galley notes, and non-primary corpus roles¶

Not applicable: primary research article unless the Summary flags a review, SI-only register, or duplicate PDF (see Reader notes / Limitations).

This proof slug does not duplicate ReaxFF MD or DFT training line items; use 2021akbarian-physical-che-understanding-physical for Methods text drawn from the version-of-record PDF.

Findings¶

The curated sibling page states that increasing strontium content monotonically lowers transition temperature and polarization in the modeled setups, that higher oxygen vacancy concentration suppresses polarization and transition temperature, and that water adsorption on TiO₂-terminated surfaces enhances charge screening and increases initial polarization; those quantitative trends must be verified against the VOR PDF on 2021akbarian-physical-che-understanding-physical. The graphical abstract fragment in the proof extract independently motivates BSTO/STO epitaxy as a practical context for composition-dependent ferroelectric studies, even though full heterostructure device stacks are not the focus of the MD narrative summarized on the sibling entry. Proof-stage subscript formatting (for example BaₓSr₁₋ₓTiO₃) should be checked against the final HTML article before quoting stoichiometry in downstream synthesis pages. Comparisons to laboratory work must follow the VOR on 2021akbarian-physical-che-understanding-physical—this proof PDF is for ingest provenance only.

Limitations¶

extraction_quality: partial reflects proof boilerplate in extracts. Prefer the VOR PDF for figures and SI links.

Relevance to group¶

Van Duin-group extension of perovskite ReaxFF from BaTiO₃ toward BSTO with explicit hydration effects.

BSTO’s sensitivity to both A-site mixing and oxygen nonstoichiometry makes it a demanding training ground for oxide ReaxFF: curators extending this work should capture any additional DFT training sets added after the PCCP issue date in addendum notes rather than silently editing historical parameter claims.

Graphical-abstract text in proofs sometimes uses placeholder stoichiometry formatting; always confirm subscripts against the final HTML article before quoting formulas in theme hubs.

Citations and evidence anchors¶

DOI: 10.1039/D1CP03353K