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Record W2079247437 · doi:10.1142/s0218625x02003780

LOCAL ELECTRONIC STRUCTURE OF DOPING ATOMS IN <font>MA</font><sub>2</sub><font>Ca</font><sub>n-1</sub><font>Cu</font><sub>n</sub><font>O</font><sub>2n+3</sub> HIGH-T<sub>c</sub> SUPERCONDUCTORS WITH [<font>M</font>-12(n-1)n] TYPE STRUCTURES

2002· article· en· W2079247437 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueSurface Review and Letters · 2002
Typearticle
Languageen
FieldPhysics and Astronomy
TopicPhysics of Superconductivity and Magnetism
Canadian institutionsUniversity of Saskatchewan
FundersLawrence Berkeley National LaboratoryNatural Sciences and Engineering Research Council of CanadaU.S. Department of Energy
KeywordsFontCopperCrystallographyChemistryDopingAnalytical Chemistry (journal)Materials science

Abstract

fetched live from OpenAlex

Results of X-ray fluorescence measurements of MA 2 Ca n-1 Cu n O 2n + 3 compounds with [ M -12(n-1)n] type structures, ( C 0.8 N 0.2 Sr 2 CuO 5.3 , [ Cu 0.25 (C,N) 0.75 ] Sr 2 CaCu 2 O y , Cu 0.5 V 0.5 Sr 2 CaCu 2 O 7.5 , Cu 0.5 V 0.5 Sr 2 Ca 2 Cu 3 O 9.4 , Cu 0.5 V 0.5 Sr 2 ( Ca 3.6 Sr 0.4 ) Cu 5 O 13.5 and Cu 0.5 V 0.5 Sr 2 ( Ca 4.7 Sr 0.3 ) Cu 6 O 15.3 , are presented. The experiments show that C-atoms form a distorted CO 3 oxyacid group with a partial substitution of copper and nitrogen atoms in the M-sites. We conclude that the CO 3 2- group in (C,N) Sr 2 Ca n-1 Cu n O y and (Cu,C,N) Sr 2 Ca n-1 Cu n O y is substituted by the NO 2 - which induces the creation of the hole carriers in these compounds. We have found that V-atoms in the given compounds form ( VO 4 ) 3- tetrahedrons and have a pentavalent state.

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.

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)0.002
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Science and technology studies, Research integrity
Consensus categoriesMeta-epidemiology (narrow), Research integrity
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.046
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.000
Meta-epidemiology (narrow)0.0060.006
Meta-epidemiology (broad)0.0080.002
Bibliometrics0.0010.004
Science and technology studies0.0020.003
Scholarly communication0.0010.007
Open science0.0030.001
Research integrity0.0020.007
Insufficient payload (model declined to judge)0.0000.000

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 head0.009
GPT teacher head0.206
Teacher spread0.198 · 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