New Dielectric and Ferroelectric Solid Solution of (1−<i>x</i>)Ba(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>−<i>x</i>PbTiO<sub>3</sub> with Morphotropic Phase Boundary
Bibliographic record
Abstract
A new solid solution of (1− x )Ba(Mg 1/3 Nb 2/3 )O 3 − x PbTiO 3 [(1− x )BMN− x PT] has been synthesized in the form of ceramics by solid-state reactions and characterized by means of X-ray diffraction, dielectric spectroscopy, and ferroelectric measurements. A partial solid-state phase diagram of the binary system is established. It exhibits a morphotropic phase boundary region in the composition range between x = 0.71 and x = 0.74. The dielectric permittivity of BMN has been greatly enhanced by the substitution of PT. The ceramics of 0.4BMN−0.6PT show typical relaxor ferroelectric behavior with the diffuse maximum of high permittivity shifting to higher temperature with increasing frequency. With further increase of the PT content, the permittivity peaks become sharper and frequency-independent, indicating a ferroelectric phase transition, the temperature of which ( T C ) increases with x . Thus, the transformation from a simple dielectric, to relaxor, and to ferroelectric phase has been demonstrated in this solid solution system.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.001 |
| Meta-epidemiology (narrow) | 0.002 | 0.002 |
| Meta-epidemiology (broad) | 0.003 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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; both teacher heads agree on what is shown here.
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".