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Record W2069515948 · doi:10.1103/physrevb.73.094412

Effects of a uniform external magnetic field on the magnetic properties of a pure dipolar planar system

2006· article· en· W2069515948 on OpenAlexafffund
A. M. Abu-Labdeh, A. B. MacIsaac, J. P. Whitehead, K De’Bell, M. G. Cottam

Bibliographic record

VenuePhysical Review B · 2006
Typearticle
Languageen
FieldPhysics and Astronomy
TopicTheoretical and Computational Physics
Canadian institutionsWestern University
FundersNatural Sciences and Engineering Research Council of CanadaMemorial University of NewfoundlandUniversity of Calgary
KeywordsCondensed matter physicsAntiferromagnetismParamagnetismSpinsPhase diagramPhase boundaryMonte Carlo methodPhysicsDipoleFerromagnetismMagnetic fieldMaterials sciencePhase (matter)Quantum mechanics

Abstract

fetched live from OpenAlex

The effects of a uniform external magnetic field, $h$, on the magnetic properties of a pure dipolar planar system on a square lattice have been investigated for both zero and finite temperature, $T$. From Monte Carlo simulations, the magnetic phase diagram for this system has been determined as a function of both $h$ and $T$. At low temperatures and for low values of $h$ the phase diagram shows an antiferromagnetic (dipolar) phase in which the spins are aligned perpendicular to $h$. For large values of $h$ the equilibrium phase is ferromagnetic, with the spins aligned parallel to $h$. The results also show that the phase boundary separating these two ordered phases appears to be first order with very weak hysteresis. Moreover, the Monte Carlo results indicate that the phase boundary separating the dipolar antiferromagnetic phase from the paramagnetic phase is second order.

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.002
Threshold uncertainty score0.008

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.001
Scholarly communication0.0010.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

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.

Opus teacher head0.004
GPT teacher head0.202
Teacher spread0.197 · 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; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designTheoretical or conceptual
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

Citations8
Published2006
Admission routes2
Has abstractyes

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Same venuePhysical Review BSame topicTheoretical and Computational PhysicsFrench-language works237,207