Producing Freestanding Single-Crystal BaTiO Films through Full-Solution Deposition.

Strontium aluminate, with suitable lattice parameters and environmentally friendly water solubility, has been strongly sought for use as a sacrificial layer in the preparation of freestanding perovskite oxide thin films in recent years. However, due to this material's inherent water solubility, the methods used for the preparation of epitaxial films have mainly been limited to high-vacuum techniques, which greatly limits these films' development. In this study, we prepared freestanding single-crystal perovskite oxide thin films on strontium aluminate using a simple, easy-to-develop, and low-cost chemical full-solution deposition technique.

Colossal Ferroelectric Photovoltaic Effect in Inequivalent Double-Perovskite BiFeMnO Thin Films.

Double perovskite films have been extensively studied for ferroelectric order, ferromagnetic order, and photovoltaic effects. The customized ion combinations and ordered ionic arrangements provide unique opportunities for bandgap engineering. Here, a synergistic strategy to induce chemical strain and charge compensation through inequivalent element substitution is proposed.

[Malignant tumor and hyperfibrinogenemia].

Objective: To investigate the blood fibrinogen (FIB) content before and after chemotherapy or radiotherapy in 43 malignant tumor patients.

Methods: COULTER ACL-200 automated coagulation analyzer was used in monitoring FIB in the patients.

Results: The FIB content was significantly higher in malignant tumor patients than that in benign disease patients.