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Record W1737700033 · doi:10.1103/physrevb.82.094453

Magnetic phase transition in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mtext>V</mml:mtext><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mtext>O</mml:mtext><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>nanocrystals

2010· article· lv· W1737700033 on OpenAlexafffund
Vladimir Blagojević, J. P. Carlo, Louis E. Brus, Michael L. Steigerwald, Y. J. Uemura, Simon J. L. Billinge, Wenduo Zhou, Peter W. Stephens, A. A. Aczel, G. M. Luke

Bibliographic record

VenuePhysical Review B · 2010
Typearticle
Languagelv
FieldMaterials Science
TopicTransition Metal Oxide Nanomaterials
Canadian institutionsMcMaster University
FundersOffice of International Science and EngineeringDivision of Materials ResearchBasic Energy SciencesMaterials Research Science and Engineering Center, Harvard UniversityBrookhaven National LaboratoryTRIUMFNatural Sciences and Engineering Research Council of CanadaMcMaster UniversityU.S. Department of EnergyNational Science Foundation
KeywordsParamagnetismRelaxation (psychology)Materials sciencePhase transitionCrystallographyAnalytical Chemistry (journal)PhysicsNanorodChemistryCondensed matter physicsNanotechnology

Abstract

fetched live from OpenAlex

${\text{V}}_{2}{\text{O}}_{3}$ nanocrystals can be synthesized through hydrothermal reduction in $\text{VO}{(\text{OH})}_{2}$ using hydrazine as a reducing agent. Addition of different ligands to the reaction produces nanoparticles, nanorods, and nanoplatelets of different sizes. Small nanoparticles synthesized in this manner show suppression of the magnetic phase transition to lower temperatures. Using muon spin relaxation spectroscopy and synchrotron x-ray diffraction, we have determined that the volume fraction of the high-temperature phase, characterized by a rhombohedral structure and paramagnetism, gradually declines with decreasing temperature, in contrast to the sharp transition observed in bulk ${\text{V}}_{2}{\text{O}}_{3}$.

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 distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.005
metaresearch head score (Gemma)0.003
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Science and technology studies, Scholarly communication, Research integrity, Insufficient payload (model declined to judge)
Consensus categoriesMeta-epidemiology (narrow), Science and technology studies, Research integrity, Insufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.627
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0050.003
Meta-epidemiology (narrow)0.0020.004
Meta-epidemiology (broad)0.0020.004
Bibliometrics0.0010.003
Science and technology studies0.0020.004
Scholarly communication0.0030.004
Open science0.0040.002
Research integrity0.0030.003
Insufficient payload (model declined to judge)0.3760.012

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.

Opus teacher head0.019
GPT teacher head0.271
Teacher spread0.252 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; both teacher heads agree on what is shown here.

Study designBench or experimental
Domainnot available
GenreEmpirical

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".

Quick stats

Citations24
Published2010
Admission routes2
Has abstractyes

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Same venuePhysical Review BSame topicTransition Metal Oxide NanomaterialsFrench-language works237,207