{
  "alternatives": [
    {
      "category": "thermal",
      "conditions": {
        "temperature_text": "room temperature"
      },
      "id": "pyroelectric-p3/unspecified/schwesyg2011",
      "kind": "scalar",
      "name": "Pyroelectric coefficient",
      "property": "pyroelectric-p3",
      "provenance": {
        "locator": "Eq. (2.17)",
        "original_reference": "Bartholomaus, Buse, Deuper, Kratzig, phys. stat. sol. (a) 142, 55 (1994)",
        "source_id": "schwesyg2011",
        "status": "S",
        "transcribed": "2026-10-25"
      },
      "public": true,
      "symbol": "p_3",
      "unit": {
        "display": "C/(m^2 K)",
        "ucum": "C/(m2.K)"
      },
      "value": -6.4e-05,
      "variant": "unspecified",
      "variant_note": "'crystals of different compositions'"
    },
    {
      "category": "thermal",
      "conditions": {
        "temperature_text": "room temperature"
      },
      "frame": {
        "convention": "IRE-1949",
        "handedness": "right",
        "setting": "crystal-physics",
        "x": "a axis, perpendicular to a mirror plane",
        "y": "in a mirror plane",
        "z": "polar c axis",
        "z_sign_definition": "+c points out of the face that becomes negative on compression; equivalently it becomes positive on cooling (weis1985 pp. 192-193)"
      },
      "id": "pyroelectric-p3/unspecified/weis1985",
      "kind": "scalar",
      "name": "Pyroelectric coefficient",
      "notes": "p3 < 0 means that on cooling the +c face becomes more positive (weis1985 p. 196). Magnitudes across sources span 4-9.5e-5 C/(m^2 K).",
      "property": "pyroelectric-p3",
      "provenance": {
        "locator": "Eq. (2), p. 196",
        "original_reference": "Savage, J. Appl. Phys. 37, 3071 (1966)",
        "source_id": "weis1985",
        "status": "P-comp",
        "transcribed": "2026-10-25"
      },
      "public": true,
      "symbol": "p_3",
      "unit": {
        "display": "C/(m^2 K)",
        "ucum": "C/(m2.K)"
      },
      "value": -4e-05,
      "variant": "unspecified"
    }
  ],
  "meta": {
    "api_version": "v1",
    "attribution": "lithium-niobate.com data compiled by Wentao Jiang; cite the original sources listed per value.",
    "data_version": "0.1.0",
    "documentation": "https://lithium-niobate.com/api/openapi.json",
    "license": {
      "id": "CC-BY-4.0",
      "name": "Creative Commons Attribution 4.0 International",
      "url": "https://creativecommons.org/licenses/by/4.0/"
    },
    "property": "pyroelectric-p3",
    "variant": "unspecified"
  },
  "recommended": [],
  "recommended_note": "No single recommended record: sources disagree or none is primary; see alternatives and spread.",
  "spread": {
    "max": -4e-05,
    "min": -6.4e-05,
    "n_records": 2,
    "note": "Range over all public records regardless of conditions; compare conditions before use.",
    "unit": "C/(m2.K)"
  }
}