Neutron scattering study of spin density wave and weak ferromagnetic orders in [formula omitted].

Abstract Microscopic coexistence between weak ferromagnetism (WFM) and superconductivity (SC) in T b 0.47 Y 0.53 N i 2 11 B 2 C was investigated. Magnetization measurements indicate that antiferromagnetic (AFM), WFM and SC transitions occur in this material. Unpolarized neutron diffraction experiments revealed that the AFM order is best described by a longitudinal spin density wave with a propagation vector of q = 0.550 a ∗. Polarized neutron diffraction experiments further confirmed that the WFM order is originated in T b 0.47 Y 0.53 N i 2 11 B 2 C. [ABSTRACT FROM AUTHOR]