{
    "category": "system.chemical", 
    "references": [
        {
            "url": "http://www.matprop.ru/GaAs_basic.html"
        }
    ], 
    "names": [
        "GaAs"
    ], 
    "properties": [
        {
            "scalars": {
                "value": "Zinc Blende"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Crystal structure"
        }, 
        {
            "scalars": {
                "value": "T   d   2  -F43m"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Group of symmetry"
        }, 
        {
            "scalars": {
                "value": "4.42\u00b710   22"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Number of atoms in 1 cm"
        }, 
        {
            "scalars": {
                "value": "240 A"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "de Broglie electron wavelength"
        }, 
        {
            "scalars": {
                "value": "360 K"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Debye temperature"
        }, 
        {
            "scalars": {
                "value": "5.32 g cm   -3"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Density"
        }, 
        {
            "scalars": {
                "value": "12.9"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Dielectric constant (static )"
        }, 
        {
            "scalars": {
                "value": "10.89"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Dielectric constant (high frequency)"
        }, 
        {
            "scalars": {
                "value": "0.063   m   o"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Effective electron mass"
        }, 
        {
            "scalars": {
                "value": "0.51   m   o"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Effective hole masses"
        }, 
        {
            "scalars": {
                "value": "0.082   m   o"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Effective hole masses"
        }, 
        {
            "scalars": {
                "value": "4.07 eV"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Electron affinity"
        }, 
        {
            "scalars": {
                "value": "5.65325 A"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Lattice constant"
        }, 
        {
            "scalars": {
                "value": "0.035 eV"
            }, 
            "dataType": "EXPERIMENTAL", 
            "units": "", 
            "conditions": [
                {
                    "units": "K", 
                    "scalars": {
                        "value": "300"
                    }, 
                    "name": "Temperature"
                }
            ], 
            "name": "Optical phonon energy"
        }
    ]
}