$neutron powder diffraction$

The helicoidal structure competes with superconductivity while the antiferromagnetism coexists with it. These so-called thermal neutrons are strongly diffracted by the ordered arrangements of atoms in crystals, in an analogous way to the well-known phenomenon of X. The magnetic structure is the superposition of two configurations, one in which ferromagnetic sheets of holmium spins parallel to the a-b plane are coupled antiferromagnetically along the c-axis, and another in which the ferromagnetic planes are rotated away from the antiparallel configuration to give an incommensurate helicoidal structure with a period approximately equal to twelve times the length of the c-axis. Magnetic peaks begin to appear at about 8K. No phase transitions of the nuclear structure have been observed in the range of temperatures examined. Neutron beam rotary irradiation apparatus US7068754B2 (en) : System to. The compound crystallizes with the symmetry of space group 14/mmm and has room temperature lattice parameters a=3.5170(1) and c=10.5217(3) angstrom. The X-Ray Shutter is an accessory for calibration facilities and. The helicoidal structure competes with superconductivity while the antiferromagnetism coexists with it.ĪB - The nuclear and magnetic structures of HoNi2B2C have been investigated by neutron powder diffraction at room temperature and at 10, 5.1 and 2.2K. The use of neutrons for such powder diffraction work has advanced significantly over the past 50 years. The applications of powder neutron diffraction have been expanded greatly by the use of the Rietveld line profile analysis technique,3235 a technique which permits a detailed analysis of the intensity of the individual powder diffraction lines in terms of a refinement from a proposed structure. The magnetic structure is the superposition of two configurations, one in which ferromagnetic sheets of holmium spins parallel to the a-b plane are coupled antiferromagnetically along the c-axis, and another in which the ferromagnetic planes are rotated away from the antiparallel configuration to give an incommensurate helicoidal structure with a period approximately equal to twelve times the length of the c-axis. Neutron powder diffraction is a technique for determining the crystalline structure and texture of materials for which single crystals cannot be obtained. We observed the magnetic reflections with the modulation vector q. Magnetic peaks begin to appear at about 8K. Magnetic structure of NdPd5Al2 has been studied by means of neutron powder diffraction. The compound crystallizes with the symmetry of space group 14/mmm and has room temperature lattice parameters a=3.5170(1) and c=10.5217(3) angstrom. N2 - The nuclear and magnetic structures of HoNi2B2C have been investigated by neutron powder diffraction at room temperature and at 10, 5.1 and 2.2K. T1 - Neutron powder diffraction refinement of the nuclear and magnetic structures of HoNi2B2C at R.T., 10, 5.1 and 2.2 K

$neutron powder diffraction$