{"success":true,"data":{"mp_id":"mp-990430","type":"ELA","summary":{"formula":"SrTa2H2O7","mp_id":"mp-990430","nelements":4,"is_stable":false,"nsites":12,"density":6.20707,"volume":150.75697,"a":9.90515,"b":9.90515,"c":9.90515,"alpha":156.7939,"beta":156.7939,"gamma":33.05085,"space_group":"I4\/mmm","space_group_num":139,"crystal_system":"Tetragonal","formation_energy_per_atom":-2.84957,"energy_per_atom":-8.42059,"energy_above_hull":0.08613,"point_group":"4\/mmm","Bravais_Lattice":"tI","Bravais_Combination":"tI","packing_fraction":null,"uncorrected_energy_per_atom":-8.01984,"volume_per_atom":12.56308,"c_over_a":1,"b_over_a":1,"poisson_ratio":0.25408,"Is_FCC":0,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":75.39,"g_vrh":44.35,"E_Calc(GPa)":111.237,"homogeneous_poisson":0.254,"Vickers_Hard_Est(GPa)":6.883,"universal_anisotropy":7.178,"Lame_Lambda(GPa)":45.82333333333334,"Pugh_Ratio(K\/G)":1.6998872604284103,"Ductility":"Ductile","bulk_modulus":75.39,"shear_modulus":44.35,"debye_temperature":440.6,"sound_velocity":2969,"homogeneity":0.254},"electronic":{"is_metal":false,"band_gap":2.24058,"is_gap_direct":false,"cbm":null},"magnetic":{"is_magnetic":false,"total_magnetization":5.0e-5,"ordering":"NM","num_magnetic_sites":0,"total_mag_norm_vol":0},"refs":{"mp_url":"https:\/\/materialsproject.org\/materials\/mp-990430","mp_task_ids":["aaadccij","aaadvegn"]}}}