[
    {
        "property-id" "tag:staff@noreply.openkim.org,2014-05-21:property/elastic-constants-isothermal-cubic-crystal-npt" 
        "instance-id" 1 
        "short-name" {
            "source-value" [
                "bcc"
            ]
        } 
        "species" {
            "source-value" [
                "Ni" 
                "Ni"
            ]
        } 
        "a" {
            "source-value" 2.801044046878815 
            "source-unit" "angstrom" 
            "si-unit" "m" 
            "si-value" 2.801044046878815e-10
        } 
        "basis-atom-coordinates" {
            "source-value" [
                [
                    0.0 
                    0.0 
                    0.0
                ] 
                [
                    0.5 
                    0.5 
                    0.5
                ]
            ]
        } 
        "space-group" {
            "source-value" "Im-3m"
        } 
        "temperature" {
            "source-value" 0 
            "source-unit" "K" 
            "si-unit" "K" 
            "si-value" 0.0
        } 
        "cauchy-stress" {
            "source-value" [
                0 
                0 
                0 
                0 
                0 
                0
            ] 
            "source-unit" "GPa" 
            "si-unit" "kg / m s^2" 
            "si-value" [
                0.0 
                0.0 
                0.0 
                0.0 
                0.0 
                0.0
            ]
        } 
        "c11" {
            "source-value" -64.2980860240906 
            "source-unit" "GPa" 
            "source-std-uncert-value" 0.007335930724912887 
            "si-unit" "kg / m s^2" 
            "si-value" -64298086024.09059
        } 
        "c12" {
            "source-value" 132.99913926448514 
            "source-unit" "GPa" 
            "source-std-uncert-value" 0.005187286361979778 
            "si-unit" "kg / m s^2" 
            "si-value" 132999139264.4851
        } 
        "c44" {
            "source-value" 110.28535808161347 
            "source-unit" "GPa" 
            "source-std-uncert-value" 0.001833982681381682 
            "si-unit" "kg / m s^2" 
            "si-value" 110285358081.6135
        } 
        "excess" {
            "source-value" 0.05147153325780774 
            "source-unit" "GPa" 
            "source-std-uncert-value" 0.002593643180913324 
            "si-unit" "kg / m s^2" 
            "si-value" 51471533.25780774
        }
    } 
    {
        "property-id" "tag:staff@noreply.openkim.org,2014-04-15:property/bulk-modulus-isothermal-cubic-crystal-npt" 
        "instance-id" 2 
        "short-name" {
            "source-value" [
                "bcc"
            ]
        } 
        "species" {
            "source-value" [
                "Ni" 
                "Ni"
            ]
        } 
        "a" {
            "source-value" 2.801044046878815 
            "source-unit" "angstrom" 
            "si-unit" "m" 
            "si-value" 2.801044046878815e-10
        } 
        "basis-atom-coordinates" {
            "source-value" [
                [
                    0.0 
                    0.0 
                    0.0
                ] 
                [
                    0.5 
                    0.5 
                    0.5
                ]
            ]
        } 
        "space-group" {
            "source-value" "Im-3m"
        } 
        "temperature" {
            "source-value" 0 
            "source-unit" "K" 
            "si-unit" "K" 
            "si-value" 0.0
        } 
        "cauchy-stress" {
            "source-value" [
                0 
                0 
                0 
                0 
                0 
                0
            ] 
            "source-unit" "GPa" 
            "si-unit" "kg / m s^2" 
            "si-value" [
                0.0 
                0.0 
                0.0 
                0.0 
                0.0 
                0.0
            ]
        } 
        "isothermal-bulk-modulus" {
            "source-value" 67.23339750162656 
            "source-unit" "GPa" 
            "source-std-uncert-value" 0.004235401578827974 
            "si-unit" "kg / m s^2" 
            "si-value" 67233397501.62656
        }
    }
]