{
    "category": "system.chemical", 
    "references": [
        {
            "url": "http://www.matprop.ru/AlN_basic.html"
        }
    ], 
    "names": [
        "AlN"
    ], 
    "properties": [
        {
            "scalars": {
                "value": ""
            }, 
            "dataType": "EXPERIMENTAL", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": ""
        }, 
        {
            "scalars": {
                "value": "Wurtzite"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Crystal structure"
        }, 
        {
            "scalars": {
                "value": "C       4       6v      -P6       3      mc"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Group of symmetry"
        }, 
        {
            "scalars": {
                "value": "9.58\u00b710     22"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Number of atoms in 1 cm"
        }, 
        {
            "scalars": {
                "value": "1150 K"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Debye temperature"
        }, 
        {
            "scalars": {
                "value": "3273 K"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Melting point"
        }, 
        {
            "scalars": {
                "value": "3.255 g cm     -3    3.23 g cm     -3"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Density"
        }, 
        {
            "scalars": {
                "value": "9.14"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Dielectric constant (static)"
        }, 
        {
            "scalars": {
                "value": "300 K"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "8.5"
        }, 
        {
            "scalars": {
                "value": "4.84    4.6    4.77"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Dielectric constant (high frequency)"
        }, 
        {
            "scalars": {
                "value": "2.1 - 2.2"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Infrared refractive index"
        }, 
        {
            "scalars": {
                "value": "300 K, Polycrystalline films"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "1.9 - 2.1"
        }, 
        {
            "scalars": {
                "value": "300 K, Amorphous films"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "1.8 - 1.9"
        }, 
        {
            "scalars": {
                "value": "0.4     m       o"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Effective electron mass"
        }, 
        {
            "scalars": {
                "value": "3.53     m       o     10.42     m       o"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Effective hole masses (heavy)"
        }, 
        {
            "scalars": {
                "value": "3.53     m       o     0.24     m       o"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Effective hole masses (light)"
        }, 
        {
            "scalars": {
                "value": "0.25     m       o     3.81     m       o"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Effective hole masses (split-off band)"
        }
    ]
}