Polarization reversal in multiferroic TbMnO3 with a rotating magnetic field direction.

Physical review letters · 2007 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 3439

A method is reported to reverse electric polarization in multiferroic TbMnO3 without applying an electric field or heat. The direction of magnetic-field-induced polarization along the a axis (Pa) is memorized even at zero field where Pa is absent, and the pol…

Study snapshot

PublicationPhysical review letters · 2007

Study typeother

Reported directionUnclear

Evidence ratingInsufficient

Abstract

For the memory application of magnetoelectric multiferroics, not only bistability (i.e., ferroelectricity) but also the switching of the polarization direction with some noneverlasting stimulus is necessary. Here, we report a novel method for the electric polarization reversal in TbMnO3 without the application of an electric field or heat. The direction of the magnetic-field-induced polarization along the a axis (Pa) is memorized even in the zero field where Pa is absent. The polarization direction can be reversed by rotating the magnetic-field direction in the ab plane.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthInsufficientConfidence: 66% · Peer reviewed: yes

Main findings

Outcomes measured

electric polarization reversal
magnetic-field-induced polarization along a axis (Pa)
memory of polarization direction in zero field

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": null,
    "source": "rotating magnetic field",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "electric polarization reversal",
    "magnetic-field-induced polarization along a axis (Pa)",
    "memory of polarization direction in zero field"
  ],
  "main_findings": "A method is reported to reverse electric polarization in multiferroic TbMnO3 without applying an electric field or heat. The direction of magnetic-field-induced polarization along the a axis (Pa) is memorized even at zero field where Pa is absent, and the polarization direction can be reversed by rotating the magnetic-field direction in the ab plane.",
  "effect_direction": "unclear",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "TbMnO3",
    "multiferroic",
    "magnetoelectric",
    "polarization reversal",
    "rotating magnetic field",
    "memory effect"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1103/physrevlett.99.227206
PubMed: 18233323

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