Charge density wave formation accompanying ferromagnetic ordering in quasi-one-dimensional BaIrO3

The magnetic, transport, optical, and structural properties of quasi-one-dimensional BaIrO3 show evidence for the simultaneous onset of electronic density wave formation and ferromagnetism at T-c3 = 175 K, Two additional features in the chain direction de conductivity show a sudden change to metallic behavior below T-c2 = 80 K and then a Mott-like transition at T-c1 = 26 K. Highly non-linear de conductivity, optical gap formation at approximate to 9k(B)T(c3), additional phonon modes, and emergent X-ray satellite structure support density wave formation, Even at very high (30 T) fields the saturation Ir moment is very small, approximate to 0.04 mu(B)/Ir (C) 2000 Elsevier Science Ltd. All rights reserved.