{"success":true,"data":{"mp_id":"mp-741","type":"ELA","summary":{"formula":"HfO2","mp_id":"mp-741","nelements":2,"is_stable":false,"nsites":12,"density":11.60339,"volume":120.4906,"a":3.3336,"b":5.5564,"c":6.505,"alpha":90,"beta":90,"gamma":90,"space_group":"Pnma","space_group_num":62,"crystal_system":"Orthorhombic","formation_energy_per_atom":-3.88053,"energy_per_atom":-10.49823,"energy_above_hull":0.13928,"point_group":"mmm","Bravais_Lattice":"oP","Bravais_Combination":"oP","packing_fraction":null,"uncorrected_energy_per_atom":-10.04023,"volume_per_atom":10.04088,"c_over_a":1.95134,"b_over_a":1.66679,"poisson_ratio":0.31773,"Is_FCC":0,"Is_BCC":0,"Is_HCP":0},"elasticity":{"k_vrh":224.899,"g_vrh":93.323,"E_Calc(GPa)":245.95,"homogeneous_poisson":0.318,"Vickers_Hard_Est(GPa)":7.152,"universal_anisotropy":0.732,"Lame_Lambda(GPa)":162.68366666666668,"Pugh_Ratio(K\/G)":2.409898953098379,"Ductility":"Brittle","bulk_modulus":224.899,"shear_modulus":93.323,"debye_temperature":462.8,"sound_velocity":3174.9,"homogeneity":0.318},"electronic":{"is_metal":false,"band_gap":3.3929,"is_gap_direct":true,"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-741","mp_task_ids":["aaadmohc","aaaeuqtp","aaaezmtp","aaaezplr","aaafcawa"]},"xrd":{"by_target":{"AgKa":{"radiation":"Ag Kα","wavelength":0.5609,"n_peaks":144,"three_strong":[12.3033,11.4679,15.8984]},"CoKa":{"radiation":"Co Kα","wavelength":1.7903,"n_peaks":22,"three_strong":[40.0022,37.1924,37.5918]},"CrKa":{"radiation":"Cr Kα","wavelength":2.291,"n_peaks":12,"three_strong":[51.9154,48.1702,48.701]},"CuKa":{"radiation":"Cu Kα","wavelength":1.5418,"n_peaks":31,"three_strong":[34.2643,31.8818,32.2208]},"MoKa":{"radiation":"Mo Kα","wavelength":0.7107,"n_peaks":136,"three_strong":[15.6084,14.5465,20.1855]}}}}}