Neutron diffraction studies on the thermal expansion and anomalous mechanics in the perovskite-type [C(ND2)3]Me2+(DCOO)3 [Me = Cu, Mn, Co]

2018 ◽  
Vol 20 (25) ◽  
pp. 17059-17070 ◽  
Author(s):  
M. Viswanathan
Keyword(s):  
Thermal Expansion ◽  
Neutron Diffraction ◽  
Single Crystal ◽  
Thermomechanical Characteristics ◽  
Powder Neutron Diffraction ◽  
Type C ◽  
Perovskite Type

The thermomechanical characteristics of [C(ND2)3]Me2+(DCOO)3 [Me = Cu, Co, Mn] have been evaluated by single-crystal and powder neutron diffraction.

scholarly journals Correction: Neutron diffraction studies on the thermal expansion and anomalous mechanics in the perovskite-type [C(ND2)3]Me2+(DCOO)3 [Me = Cu, Mn, Co]

2018 ◽  
Vol 20 (27) ◽  
pp. 18889-18889
Author(s):  
M. Viswanathan
Keyword(s):  
Thermal Expansion ◽  
Neutron Diffraction ◽  
Chem Phys ◽  
Type C ◽  
Perovskite Type ◽  
Phys Chem Chem Phys

Correction for ‘Neutron diffraction studies on the thermal expansion and anomalous mechanics in the perovskite-type [C(ND2)3]Me2+(DCOO)3 [Me = Cu, Mn, Co]’ by M. Viswanathan et al., Phys. Chem. Chem. Phys., 2018, DOI: 10.1039/c8cp01245h.

Single-crystal and powder neutron diffraction study of the Fe Mn1−S solid solutions

2015 ◽  
Vol 632 ◽  
pp. 563-567 ◽  
Author(s):  
Galina Abramova ◽  
Juerg Schefer ◽  
Nadir Aliouane ◽  
Martin Boehm ◽  
German Petrakovskiy ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Single Crystal ◽  
Diffraction Study ◽  
Solid Solutions ◽  
Neutron Diffraction Study ◽  
Powder Neutron Diffraction

ChemInform Abstract: Single-Crystal and Powder Neutron Diffraction Study of the FexMn1-xS Solid Solutions.

ChemInform ◽  
2015 ◽  
Vol 46 (22) ◽  
pp. no-no
Author(s):  
Galina Abramova ◽  
Juerg Schefer ◽  
Nadir Aliouane ◽  
Martin Boehm ◽  
German Petrakovskiy ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Single Crystal ◽  
Diffraction Study ◽  
Solid Solutions ◽  
Neutron Diffraction Study ◽  
Powder Neutron Diffraction

scholarly journals Towards routine study of hydrogenous materials using powder neutron diffraction

2014 ◽  
Vol 70 (a1) ◽  
pp. C1739-C1739
Author(s):  
Paul Henry
Keyword(s):  
Neutron Diffraction ◽  
Single Crystal ◽  
Cross Section ◽  
Materials Science ◽  
Incoherent Scattering ◽  
Scattering Cross Section ◽  
Incident Neutron ◽  
Widespread Application ◽  
Scattering Cross ◽  
Powder Neutron Diffraction

Hydrogen (1H) is an element that is ubiquitous in chemistry and materials science. Neutron diffraction is the preferred technique for studying 1H-containing compounds, but is complicated by the high incoherent scattering cross section, which also varies with wavelength. This variation of scattering cross section as a function of wavelength/energy and chemical environment is not well understood.[1-2] This is surprising as it is the largest contributing factor to the scattering properties used in single crystal and powder neutron diffraction experiments to calculate the optimal sample size for hydrogen containing compounds and the tabulated data are given for fixed neutron velocity of 2200 m s-1 (approximately 1.8 Å). The use and current limitations of certain current generation neutron diffraction instruments to probe 1H materials has recently been described.[3] Here, I present work to validate an empirical correction for the incoherent scattering cross section of 1H as a function of incident neutron wavelength in the range 0.5 - 10 Å using continuous source, monochromatic wavelength measurements. The practical use of this is that a, potentially quantitative, correction for all neutron diffraction data, including time-of-flight (TOF) from pulsed sources, as a function of scattering angle and neutron path length will become possible. Implementation of methodology that allows routine H position definition from easily synthesised material (i.e. non-isotopically enriched, and in polycrystalline or small single crystal (≤ 50 μm) form) for both TOF and monochromatic neutron instruments would be both of widespread application. Additionally, i will present work on an instrument concept for a pulsed monochromatic powder diffractometer for the ESS, which will be built in Lund by the end of the current decade. This diffractometer will aim to specialise in the data collection and analysis of hydrogenous materials using a combination of diffraction and inelastic techniques.

Enhancement of the guest orderliness in a low-symmetric perovskite-type metal–organic framework influenced by Jahn–Teller distortion

2018 ◽  
Vol 20 (34) ◽  
pp. 21809-21813 ◽  
Author(s):  
M. Viswanathan
Keyword(s):  
Neutron Diffraction ◽  
Single Crystal ◽  
Metal Organic Framework ◽  
Teller Distortion ◽  
Unusual Effect ◽  
Jahn Teller ◽  
Metal Organic ◽  
Jahn Teller Distortion ◽  
Perovskite Type ◽  
Organic Framework

Single-crystal neutron diffraction reveals an enhancement of the guest-orderliness in a low-symmetric MOF, with an opposite scenario for its high-symmetric cousin. The mechanism behind this unusual effect is proposed.

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