High Temperature Thermodynamic Properties and Pseudo-Binary Phase Diagram of the Pb(Zn<sub>1/3</sub>Nb<sub>2/3</sub>)<sub>0.91</sub>Ti<sub>0.09</sub>O<sub>3</sub>–PbO System
Bibliographic record
Abstract
The high temperature thermodynamic properties of the relaxor-based ferroelectric Pb(Zn1/3Nb2/3)0.91Ti0.09O3(PZNT91/9) and the related PZNT91/9–PbO system have been studied by means of micro-thermogravimetry and differential thermal analysis (TG/DTA), combined with optical microscopic examination. A pseudo-binary phase diagram for the system has been established, which exhibits a typical eutectic behavior. The eutectic temperature of the pseudo-binary system is determined to be 828±2°C with a eutectic composition of 25 wt%PZNT91/9–75 wt%PbO. PZNT91/9 crystals partially decompose into a pyrochlore phase above 1140°C. Upon further heating, they incongruently melt at 1225±2°C. The liquidus melting behavior of Pb(Zn1/3Nb2/3)0.91Ti0.09O3in the PbO flux for less than 75 wt% PbO (xPbO<0.75) follows a liquidus curve that is represented by the equation:TL(°C)=-435.34xPbO2-214.34xPbO+1227.6. The established phase diagram and the thermodynamic data provide a valuable guidance for the growth of large and high quality PZNT piezocrystals.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".