Controlling the electrical and magnetic ground states by doping in the complete phase diagram of titanate <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Eu</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>La</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>TiO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> thin films
Bibliographic record
Abstract
${\mathrm{EuTiO}}_{3}$, a band insulator, and ${\mathrm{LaTiO}}_{3}$, a Mott insulator, are both antiferromagnetic with transition temperatures \ensuremath{\sim}5.5 and \ensuremath{\sim}160 K, respectively. Here, we report the synthesis of ${\mathrm{Eu}}_{1\ensuremath{-}x}{\mathrm{La}}_{x}{\mathrm{TiO}}_{3}$ thin films with $x=0$ to 1 by oxide molecular beam epitaxy. The films in the full range have high crystalline quality and show no phase segregation, allowing us to carry out transport measurements to study their electrical and magnetic properties. From $x=0.03$ to 0.95, ${\mathrm{Eu}}_{1\ensuremath{-}x}{\mathrm{La}}_{x}{\mathrm{TiO}}_{3}$ films show conduction by electrons as charge carriers, with differences in carrier densities and mobilities, contrary to the insulating nature of pure ${\mathrm{EuTiO}}_{3}$ and ${\mathrm{LaTiO}}_{3}$. Following a rich phase diagram, the magnetic ground states of the films vary with increasing La-doping level, changing ${\mathrm{Eu}}_{1\ensuremath{-}x}{\mathrm{La}}_{x}{\mathrm{TiO}}_{3}$ from an antiferromagnetic insulator to an antiferromagnetic metal, a ferromagnetic metal, a paramagnetic metal, and back to an antiferromagnetic insulator. These emergent properties reflect the evolutions of the band structure, mainly at the Ti ${t}_{2\mathrm{g}}$ bands near the Fermi level, when ${\mathrm{Eu}}^{2+}$ are gradually replaced by ${\mathrm{La}}^{3+}$. This work sheds light on this method for designing the electrical and magnetic properties in strongly correlated oxides and completes the phase diagram of the titanate ${\mathrm{Eu}}_{1\ensuremath{-}x}{\mathrm{La}}_{x}{\mathrm{TiO}}_{3}$.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.005 | 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".