Heavy flavour spectroscopy and b-decay properties with the ATLAS detector

contribution for PANIC14 ATLAS has performed searches for heavy hadrons, with results including the first observation of the chi_b(3P) Bottomonium states. New results in this program are discussed, including searches for excited b-hadrons and new decay modes of b-hadrons as well as the bottomonium counterpart of X(3872). We also review ATLAS studies of B-hadron decays, including the measurement of the parity violating asymmetry parameter alpha_b in Lambda_b -> Lambda J/psi, obtained from the study of angular correlations in the p pi- mu+ mu- final state. The measurement is compared to predictions based on perturbative QCD and heavy quarks effective theory.