{"success":true,"data":{"mp_id":"mp-1394","type":"ELA","summary":{"formula":"Rb2O","mp_id":"mp-1394","nelements":2,"is_stable":false,"nsites":6,"density":4.01508,"volume":154.62361,"a":4.77067,"b":4.79639,"c":6.75744,"alpha":90,"beta":90,"gamma":90,"space_group":"Fm-3m","space_group_num":225,"crystal_system":"Cubic","formation_energy_per_atom":-1.13,"energy_per_atom":-3.43301,"energy_above_hull":0.00317,"point_group":"m-3m","Bravais_Lattice":"cF","Bravais_Combination":"cF","packing_fraction":0.7405,"uncorrected_energy_per_atom":-3.20401,"volume_per_atom":25.7706,"c_over_a":1.41646,"b_over_a":1.00539,"poisson_ratio":0.34793,"Is_FCC":1,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":22.839,"g_vrh":7.73,"E_Calc(GPa)":20.839,"homogeneous_poisson":0.348,"Vickers_Hard_Est(GPa)":0,"universal_anisotropy":8.858,"Lame_Lambda(GPa)":17.685666666666666,"Pugh_Ratio(K\/G)":2.954592496765847,"Ductility":"Brittle","bulk_modulus":22.839,"shear_modulus":7.73,"debye_temperature":null,"sound_velocity":null,"homogeneity":0.348},"electronic":{"is_metal":false,"band_gap":1.3181,"is_gap_direct":false,"cbm":null},"magnetic":{"is_magnetic":false,"total_magnetization":0,"ordering":"NM","num_magnetic_sites":0,"total_mag_norm_vol":0},"refs":{"mp_url":"https:\/\/materialsproject.org\/materials\/mp-1394","mp_task_ids":["aaabntvc","aaacmxmc","aaaenbvm","aaaextgx","aaafawik","aaafbylh","aaagbgkf"]}}}