Morphotropic phase diagram and dielectric and ferroelectric properties of (1−x)Ba(Zn1∕3Nb2∕3)O3−xPbTiO3 solid solution
Bibliographic record
Abstract
A new solid solution of (1−x)Ba(Zn1∕3Nb2∕3)O3−xPbTiO3 [(1−x)BZN−xPT] 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=0.58 and 0.61. The dielectric permittivity of BZN has been greatly enhanced by the substitution of PT. The ceramics with compositions x=0.5−0.58 show typical relaxor ferroelectric behavior with the diffuse maximum of high permittivity shifting to higher temperature with increasing frequencies. With further increase of the PT content, the permittivity peaks become frequency-independent, indicating a normal ferroelectric phase transition, the temperature of which (TC) increases with x. Thus a composition-induced transformation from a simple dielectric to relaxor and to ferroelectric phase has been realized in this solid solution system.
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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".