scholarly journals Evidence of local disorder in the overdoped regime of Ba(Fe1−xCox)2As2

2011 ◽  
Vol 84 (2) ◽  
Author(s):  
Keeseong Park ◽  
Despina Louca ◽  
Anna Llobet ◽  
J.-Q. Yan
Keyword(s):  
Local Disorder

Revealing Local Disorder in a Silver-Bismuth Halide Perovskite upon Compression

2020 ◽  
pp. 532-536
Author(s):  
Samuel P. Girdzis ◽  
Yu Lin ◽  
Linn Leppert ◽  
Adam H. Slavney ◽  
Sulgiye Park ◽  
...  
Keyword(s):  
Halide Perovskite ◽  
Local Disorder

Kondo Effect and Local Disorder in Ion Irradiated AuFe

2004 ◽  
Vol 137 (3/4) ◽  
pp. 167-178
Author(s):  
Johannes Eisenmenger ◽  
Judith Meckler ◽  
Paul Ziemann
Keyword(s):  
Kondo Effect ◽  
Local Disorder

scholarly journals CP MAS kinetics and impedance spectroscopy studies of local disorder in low-dimensional H-bonded proton-conducting materials

2019 ◽  
Vol 59 (3) ◽  
Author(s):  
Laurynas Dagys ◽  
Sergejus Balčiūnas ◽  
Jûras Banys ◽  
Feliksas Kuliešius ◽  
Vladimir Chizhik ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Spin Diffusion ◽  
Lattice Relaxation ◽  
Magic Angle Spinning ◽  
Proton Spin ◽  
Spin Lattice Relaxation ◽  
Magic Angle ◽  
Coupling Constant ◽  
Spin Lattice ◽  
Local Disorder

The 1H–13C cross-polarization magic angle spinning (CP MAS) kinetics was studied in poly(vinyl phosphonic acid) (pVPA), i.e. material with high degrees of freedom of proton motion along H-bonded chains. It has been shown that the CP kinetic data for the adjacent 1H–13C spin pairs can be described in the frame of the isotropic spin-diffusion approach. The rates of spin diffusion and spin-lattice relaxation as well as the parameters accounting for spin coupling and the effective size of spin clusters have been determined. The local order parameter S ≈ 0.63±0.02, determined as the ratio of the measured dipolar 1H–13C coupling constant and the calculated static dipolar coupling constant, is significantly lower than the values deduced for related sites in other polymers and in series of amino acids. This means that the local disorder of the C–H bonds in pVPA is between those for rather rigid C–H bond configurations having S = 0.8–1.0 and highly disordered –CH3 groups (S ~ 0.4). This effect can be attributed to the presence of the proton transfer path where proton motion is easy to activate. The activation energy for the proton motion Ea = 59±7 kJ/mol was determined from the impedance spectroscopy data analysing the temperature and frequency dependences of the complex dielectric permittivity of pVPA. The rates of proton spin-lattice relaxation and spin diffusion are of the same order and both run in the time scale of milliseconds.

Effect of Local Disorder on the Transport Properties of Al-Doped SmBa2Cu3O6+δSuperconductors

2010 ◽  
Vol 114 (45) ◽  
pp. 19509-19520 ◽  
Author(s):  
Marco Scavini ◽  
Mauro Coduri ◽  
Mattia Allieta ◽  
Luca Mollica ◽  
Michela Brunelli ◽  
...  
Keyword(s):  
Transport Properties ◽  
Local Disorder

scholarly journals Infrared Spectroscopy Reveals the Preferred Motif Size and Local Disorder in Parallel Stranded DNA G‐Quadruplexes

ChemBioChem ◽  
2020 ◽  
Vol 21 (19) ◽  
pp. 2792-2804 ◽  
Author(s):  
David A. Price ◽  
Zachary J. Kartje ◽  
Joanna A. Hughes ◽  
Tayler D. Hill ◽  
Taylor M. Loth ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Local Disorder
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