Primary studyCore evidenceTransport Physics

A Route to Two-Dimensional Room-Temperature Organometallic Multiferroics: The Marriage of d-p Spin Coupling and Structural Inversion Symmetry Breaking

Feng Q., Li X., Li X. · Nano Letters · 2024 · 3462-3469

3materials
3samples
0synthesis routes
13measurements
47results
4claims and caveats

Evidence map

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Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

CaveatSupport assessment: High

The paper is a purely computational screening/theory study; no first-hand synthesis route, experimental conductivity, porosity, electrochemistry, or thermoelectric measurement is reported.

Caveat: The main text proposes two possible experimental realisation pathways by analogy, but these are not recipes for the three predicted materials.

article p3466 · Results and discussion

Structure Property LinkSupport assessment: High

The three predicted MOFs are classified as type-I multiferroics because ferrimagnetism arises from direct d-p spin coupling while ferroelectric/antiferroelectric polarisation originates from dipole moments in the organic rings.

Caveat: All evidence is computational.

article p3464 · Results and discussion · Figure S8; Table S2 · Linked to 6 structured results

Synthesis MechanismSupport assessment: Medium

The authors suggest redox-active coordination chemistry with postsynthetic reduction and surface self-assembly as possible future routes to realise the predicted candidates.

Caveat: No reagent quantities, reaction conditions, workup, activation, or target-material synthesis outcome are reported; not extracted as synthesis_routes under the computational-paper rule.

article p3466 · Results and discussion

Transport MechanismSupport assessment: High

All three predicted MOFs are bipolar magnetic semiconductors where electron doping shifts the Fermi level to the conduction band for spin-up half-metallicity, while hole doping shifts it to the valence band for spin-down half-metallicity.

Caveat: The current-polarisation claim is inferred from calculated band structures under simulated doping, not from a device measurement.

article p3466 · Results and discussion · Figure S13 · Linked to 5 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
Cr(1,2,3,4-trazine)2Cr(1,2,3,4-trazine)2Cr atoms / Cr cations · 1,2,3,4-trazine six-membered heterocyclic ligands2D · Model SystemPredicted 2D square MOF screened from 128 Cr-heterocycle frameworks; ferrimagnetic antiferroelectric bipolar magnetic semiconductor model.article p3463 · Results and discussion · Figure 2a
Cr(1,2,4-triazine)2Cr(1,2,4-triazine)2Cr atoms / Cr cations · 1,2,4-triazine six-membered heterocyclic ligands2D · Model SystemPredicted 2D square MOF screened from 128 Cr-heterocycle frameworks; ferrimagnetic antiferroelectric bipolar magnetic semiconductor model.article p3463 · Results and discussion · Figure 2a
Cr(1,2-oxazine)2Cr(1,2-oxazine)2Cr atoms / Cr cations · 1,2-oxazine six-membered heterocyclic ligands2D · Model SystemPredicted 2D square MOF screened from 128 Cr-heterocycle frameworks; ferrimagnetic ferroelectric bipolar magnetic semiconductor model.article p3463 · Results and discussion · Figure 2a

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 3 sample records
SampleForm and roleProcessing and geometrySource
Cr(1,2,3,4-trazine)2 periodic monolayer/square-MOF modelresearch_0738__mat__cr_1234_trazine_2Model · Model System · ModelFirst-principles relaxed 2D MOF model; FE/AFE, FiM/FM and doped states evaluated computationally.2D monolayer model with 20 Angstrom vacuum spacingarticle p3463 · Results and discussion · Figure 2a
Cr(1,2,4-triazine)2 periodic monolayer/square-MOF modelresearch_0738__mat__cr_124_triazine_2Model · Model System · ModelFirst-principles relaxed 2D MOF model; FE/AFE, FiM/FM and doped states evaluated computationally.2D monolayer model with 20 Angstrom vacuum spacingarticle p3463 · Results and discussion · Figure 2a
Cr(1,2-oxazine)2 periodic monolayer/square-MOF modelresearch_0738__mat__cr_12_oxazine_2Model · Model System · ModelFirst-principles relaxed 2D MOF model; FE, AFE, FiM/FM and doped states evaluated computationally.2D monolayer model with 20 Angstrom vacuum spacingSI p2 · Computational methods