Study on Phase Diagram of Ca<sub>3</sub>NbGa<sub>3</sub>Si<sub>2</sub>O<sub>14</sub> Piezoelectric Material by Differential Thermal Analysis and X-Ray Diffraction Measurement
Why this work is in the frame
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Bibliographic record
Abstract
Ca 3 NbGa 3 Si 2 O 14 (CNGS) Is One of the Langasite-Type Crystals and it Is Known as a Piezoelectric Material. We Have Successfully Grown the Shaped CNGS Crystal Using Micro-Pulling-down (μ-PD) Method with Shape Control. However, the Impurity Phases such as Ca-Nb-O Related Compounds Were Detected in the Grown Crystals. The Creation of the Impurity Phases Is Related to Difference in Stoichiometric and Congruent Compositions. Therefore, the Detailed Investigation of Phase Diagram on CNGS Was Carried Out to Prevent the Impurity Phases Creation. It Follows from the TG-DTA Measurements that the Melting Point Systematically Changed with the Ca/Ga Ratio in the Ca 3-x NbGa 3+x Si 2 O 14±δ Cmpositions. The CNGS Phase with Ca/Ga = 1.02 Indicated the Maximum Melting Point which Suggests that the Stoichiometric Composition of CNGS Is Different in the Congruent Composition. Furthermore, in the DTA Measurements the Peaks of Impurity Phases Were Detected around 1550 °C for the CNGS Sample with Ca/Ga = 1.02.
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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 | 0.005 | 0.002 |
| Meta-epidemiology (narrow) | 0.006 | 0.007 |
| Meta-epidemiology (broad) | 0.008 | 0.002 |
| Bibliometrics | 0.005 | 0.005 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.004 | 0.002 |
| Research integrity | 0.004 | 0.003 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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 it