Nuclear resonance reflection of synchrotron radiation from thin dysprosium films with different types of magnetic ordering

2016 ◽  
Vol 117 (12) ◽  
pp. 1198-1205 ◽  
Author(s):  
M. A. Andreeva ◽  
N. O. Antropov ◽  
R. A. Baulin ◽  
E. A. Kravtsov ◽  
M. V. Ryabukhina ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Magnetic Ordering ◽  
Nuclear Resonance ◽  
Different Types ◽  
Resonance Reflection

Nuclear Resonance Excitation by Synchrotron Radiation

1978 ◽  
Vol 41 (6) ◽  
pp. 381-384 ◽  
Author(s):  
R. L. Cohen ◽  
G. L. Miller ◽  
K. W. West
Keyword(s):  
Synchrotron Radiation ◽  
Resonance Excitation ◽  
Nuclear Resonance

Ternary Stannides RE3Ru4Sn13 (RE = La, Ce, Pr, Nd) – Structure, Magnetic Properties, and 119Sn Mössbauer Spectroscopy

2011 ◽  
Vol 66 (7) ◽  
pp. 664-670
Author(s):  
◽  
Christian Schwickert ◽  
Thorsten Langer ◽  
Rainer Pöttgen
Keyword(s):  
Mössbauer Spectroscopy ◽  
Mossbauer Spectroscopy ◽  
Three Dimensional ◽  
Magnetic Ordering ◽  
119Sn Mössbauer Spectroscopy ◽  
X Ray Diffraction ◽  
Temperature Dependent ◽  
Mößbauer Spectroscopy ◽  
Arc Melting ◽  
Different Types

The ternary stannides RE3Ru4Sn13 (RE = La, Ce, Pr, Nd) were obtained by arc-melting of the elements. The polycrystalline samples were characterized by powder X-ray diffraction. The structures of three compounds were refined from single-crystal diffractometer data: Yb3Rh4Sn13 type, Pm3̄n, a = 977.74(3) pm, wR2 = 0.0379, 280 F2 values for La3Ru4Sn13, a = 971.34(9) pm, wR2 = 0.0333, 274 F2 values for Ce3Ru4Sn13, a = 970.68(8) pm, wR2 = 0.0262, 272 F2 values for Nd3Ru4Sn13 with 13 variables per refinement. The structures consist of three-dimensional networks of condensed RuSn6/2 trigonal prisms with the RE (CN 16) and Sn2 (CN 12) atoms in two different types of cavities of the networks. The two crystallographically independent tin sites have been resolved by 119Sn Mössbauer spectroscopy. Temperature-dependent magnetic susceptibility measurements of Ce3Ru4Sn13 gave a reduced magnetic moment of 2.32 μB per Ce atom, indicating intermediate cerium valence. No magnetic ordering was evident down to 3 K.

scholarly journals DAFNE-Light DXR1 Soft X-Ray Synchrotron Radiation Beamline: Characteristics and XAFS Applications

2019 ◽  
Vol 4 (1) ◽  
pp. 7 ◽  
Author(s):  
Antonella Balerna
Keyword(s):  
Fine Structure ◽  
Synchrotron Radiation ◽  
Disordered Systems ◽  
Beam Line ◽  
Long Range Order ◽  
X Ray ◽  
Xafs Spectroscopy ◽  
Insertion Device ◽  
Different Types ◽  
X Ray Absorption

X-ray Absorption Fine Structure Spectroscopy (XAFS) is a powerful technique to investigate the local atomic geometry and the chemical state of atoms in different types of materials, especially if lacking a long-range order, such as nanomaterials, liquids, amorphous and highly disordered systems, and polymers containing metallic atoms. The INFN-LNF DAΦNE-Light DXR1 beam line is mainly dedicated to soft X-ray absorption spectroscopy; it collects the radiation of a wiggler insertion device and covers the energy range from 0.9 to 3.0 keV or the range going from the K-edge of Na through to the K-edge of Cl. The characteristics of the beamline are reported here together with the XAFS spectra of reference compounds, in order to show some of the information achievable with this X-ray spectroscopy. Additionally, some examples of XAFS spectroscopy applications are also reported.

Synchrotron Radiation X-ray Microdiffraction Study of Cu Interconnects

1999 ◽  
Vol 590 ◽  
Author(s):  
X. Zhang ◽  
H. Solak ◽  
F. Cerrina ◽  
B. Lai ◽  
Z. Cai ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Copper Interconnects ◽  
Strain Variation ◽  
Adhesion Layer ◽  
Dramatic Effect ◽  
Strain Profile ◽  
X Ray ◽  
Strain Change ◽  
Different Types ◽  
Before And After

ABSTRACTWe have used synchrotron radiation x-ray microdiffraction to study the microstructure and strain variation of copper interconnects. Different types of local microstructures have been found in different samples. Our data show that the Ti adhesion layer has a dramatic effect on Cu microstructure. On site electromigration test has been conducted and strain profile along the same interconnect line was measured before and after this electrical stressing. Cu fluorescence scan was used to find the mass variations along the line. Voids and hillocks can be clearly identified in this scan. x-ray micro-diffraction was used to measure the strain change around the interesting regions.

Nuclear resonance scattering of synchrotron radiation by two non-equivalent crystal sublattices in57Fe3BO6

1992 ◽  
Vol 71 (1-4) ◽  
pp. 1341-1344 ◽  
Author(s):  
A. I. Chumakov ◽  
G. V. Smirnov ◽  
M. V. Zelepukhin ◽  
U. van Bürck ◽  
E. Gerdau ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Resonance Scattering ◽  
Nuclear Resonance ◽  
Nuclear Resonance Scattering

Helical screw type magnetic structure of the multiferroic CaMn7O12 with low Cu-doping

2012 ◽  
Vol 68 (3) ◽  
pp. 240-249 ◽  
Author(s):  
W. Sławiński ◽  
R. Przeniosło ◽  
I. Sosnowska ◽  
V. Petříček
Keyword(s):  
Crystal Structure ◽  
Synchrotron Radiation ◽  
Magnetic Moments ◽  
Magnetic Ordering ◽  
Powder Diffraction Data ◽  
Atomic Position ◽  
Cu Doping ◽  
Vector Length ◽  
Modulation Vector ◽  
Modulation Length

The modulated crystal structure and modulated magnetic ordering of the multiferroic CaCu x Mn7−x O12 is studied by analysing neutron and synchrotron-radiation (SR) powder diffraction data with a model based on the magnetic superspace group R31′(00γ)ts. Both atomic position modulations and magnetic modulations are described with the modulation vector (0, 0, q). The magnetic ordering is a screw-type circular helix where the magnetic moments are perpendicular to the c direction. The temperature dependence of the modulation vector length and the ordered magnetic moments of Mn3+ and Mn4+ ions is given between T = 50 K and the Néel temperature T N ≃ 90 K. The atomic position modulation length L p and the magnetic modulation length L m fulfil the relation L m = 2L p at all temperatures between 50 K and T N.

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