Structural and mechanical features of some lanthanum tellurite glasses
Bibliographic record
Abstract
Tellurite-based glasses of the chemical formula xLa 2 O 3 -(100 – x) TeO 2 , (2.5 ≤ x ≤ 12.5 mol%) have been prepared and studied by FTIR spectroscopy and the ultrasonic technique. The FTIR analysis indicated that La 2 O 3 transformed the TeO 3 into TeO 4 structural units in the range 2.5 ≤ x ≤ 5, while in the range 5 ≤ x ≤ 7.5 mol%; there is a coordination transformation of Te atoms in [TeO 4 ] groups into [Formula: see text] groups associated with the formation of non-bridging oxygens. Beyond x = 7.5 mol%, the structural units [Formula: see text] (tp) were destroyed and transformed into TeO 4 structural units that acted as a former and tightened the tellurite glass network more. The stretching force constant of the tellurite structural units was affected with the increase of La 2 O 3 content. The structural variations of the structural units of TeO 2 and La 2 O 3 affected the increase of density, the behaviour of the ultrasonic velocities, the elastic moduli, and both of the optical and acoustical Debye temperature with increasing La 2 O 3 content. The ratio of optical to acoustic Debye temperature represented the three-dimensional nature of tellurite-based glasses.
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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 | 0.000 | 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) | 0.000 | 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; a candidate call from one teacher head, 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".