10 research outputs found
Structural, magnetic and transport properties of Sr<sub>2</sub>Fe<sub>1-x</sub>Cr<sub>x</sub>MoO<sub>6-y</sub>
No full textCharge localization, magnetic order, structural behaviour and spin dynamics of (La-Tb)<sub>2/3</sub>Ca<sub>1/3</sub>MnO<sub>3</sub> manganese perovskites probed by neutron diffraction and muon relaxation
No full textIncommensurate modulated structure of the ferromagnetic shape-memory Ni2MnGa martensite
No full textThe ferromagnetic shape memory (NISM) alloy Ni2MnGa undergoes a martensitic transformation (NIT) at T = 220 K on cooling. The structure of this phase is studied by powder X-ray diffraction experiment. The analysis of the experimental data combined with the huge information reported in literature allowed to conclude that the Ni2MnGa martensite shows an incommensurate modulated structure closely related to a five-fold layered superstructure. The symmetry of the basic structure is found to be orthorhombic. The structure is refined by Rietveld method with superspace group Immm(00 gamma)s00 having a = 4.2187(1) angstrom, b = 5.5534(1), and c = 4.1899(1) angstrom and modulation vector q = 0.4248(3)c*. The results show that the modulation is mainly related to the periodic shuffling of the atomic layers perpendicular to the c-axis of the orthorhombic basic structure
Nuclear Resonance Inelastic Scattering of Synchrotron Radiation in Oxides With Colossal Magnetoresistance
No full text
