SYNTHESIS AND PHASE ANALYSIS OF A NEW FERROELECTRIC <font>(K<sub>0.5</sub>Na<sub>0.5</sub>)NbO<sub>3</sub>–Bi<sub>0.5</sub>K<sub>0.5</sub>TiO<sub>3</sub>–BaTiO<sub>3</sub></font> TERNARY SOLID SOLUTION
Bibliographic record
Abstract
In order to develop new lead-free pieozoelectric/ferroelectric materials, the y( K0.5Na0.5 ) NbO3 – (1 - y)[(1 - x) Bi0.5K0.5TiO3 – x BaTiO3 ] solid solution system is synthesized and the partial ternary phase diagram in the KNN-rich region with compositions of y = 0.98 to y = 0.96 is established. All the compositions studied show a gradual phase change from a tetragonal to an orthorhombic structure as the BT component increases. A mixture of tetragonal and orthorhombic phases is found in the composition range of x = 0.25 to 0.60 and y = 0.97, and x = 0.50 to 0.75 and y = 0.96, indicating a ternary morphotropic phase boundary region. The piezoelectric and ferroelectric properties of the 0.97(KNN)–0.03[0.60BKT–0.40BT] ceramics are characterized. The increase in remnant polarization as compared with pure KNN shows improved ferroelectricity by forming the ternary solid solution.
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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".