Ion Transport in Single Crystals of the Clay-Like Aluminosilicate, Vermiculite

1990 ◽  
Vol 210 ◽  
Author(s):  
Hatem Maraqah ◽  
Junxiang Li ◽  
M. Stanley Whittingham
Keyword(s):  
Magnetic Susceptibility ◽  
Ion Exchange ◽  
Charge Carrier ◽  
Ion Transport ◽  
Transport Properties ◽  
Single Crystals ◽  
Ion Conductivity ◽  
X Ray ◽  
Naturally Occurring ◽  
Hydrogen Form

AbstractWe have made an investigation of the ion transport properties of single crystals of the naturally occurring clay vermiculite in order to elucidate the mechanism of conductivity including the predominant charge carrier. Measurements of the ion conductivity, magnetic susceptibility and x-ray lattice parameters of ion-exchanged samples strongly suggest that the native cations and not protons are the major current carriers. We have synthesized the hydrogen form and found that it is a much preferred precursor for ion-exchange by other cations allowing the time necessary for ion-exchange to be reduced from several months to around a week.

Twinned olivenite from Cap Garonne, Mine du Pradet – structure and magnetic behavior

2020 ◽  
Vol 235 (1-2) ◽  
pp. 7-13
Author(s):  
Jutta Kösters ◽  
Christian Paulsen ◽  
Frank Stegemann ◽  
Birgit Heying ◽  
Valérie Galéa-Clolus ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Single Crystals ◽  
Cluster Model ◽  
Spin Exchange ◽  
Magnetic Behavior ◽  
Exchange Parameter ◽  
X Ray Diffraction ◽  
X Ray ◽  
Spin Cluster ◽  
Antiferromagnetic Spin

AbstractSystematically twinned olivenite (Cu2(AsO4)OH) single crystals from Cap Garonne, Mine du Pradet, France, were studied by X-ray diffraction: P 21/n, a = 822.69(6) pm, b = 861.88(9) pm, c = 594.06(9) pm, β = 90.000(6)°, wR = 0.0224, 1621 F2 values, 79 variables and a domain ratio of 0.501(1)/0.499(1). The temperature dependence of the magnetic susceptibility was well reproduced with a square-spin cluster model and an antiferromagnetic spin-exchange parameter of J/kB = 157(3) K.

scholarly journals Separating bulk from grain boundary Li ion conductivity in the sol–gel prepared solid electrolyte Li1.5Al0.5Ti1.5(PO4)3

2015 ◽  
Vol 3 (42) ◽  
pp. 21343-21350 ◽  
Author(s):  
Stefan Breuer ◽  
Denise Prutsch ◽  
Qianli Ma ◽  
Viktor Epp ◽  
Florian Preishuber-Pflügl ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
Ion Transport ◽  
Solid Electrolyte ◽  
Transport Properties ◽  
Low Temperatures ◽  
Sol Gel ◽  
Ion Conductivity ◽  
Li Ion ◽  
Ceramic Electrolytes

Impedance spectroscopy measurements down to very low temperatures allowed for resolving bulk ion transport properties in highly conducting ceramic electrolytes.

Magnetic and Transport Properties of Ag/Cr Metallic Superlattices

1991 ◽  
Vol 229 ◽  
Author(s):  
Kentaro Kyuno ◽  
Yasushi Inoue ◽  
Shinzo Ogu ◽  
Kazuki Mae ◽  
Takeo Kaneko ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Transport Properties ◽  
X Ray Diffraction ◽  
Magnetization Measurements ◽  
X Ray

AbstractThe results of x-ray diffraction, resistivity and magnetization measurements of Ag/Cr metallic superlattices are presented. Dramatic changes in the interplanar distances of Ag and Cr were found as a function of the number of Cr monolayers in a period. The resistivities of the superlattices increased as the composition of Cr increased. Magnetization measurements show that the superlattice [Ag(10ML)/Cr(2ML)] exibits a maximum magnetic susceptibility.

Tuning the ambipolar charge transport properties of tricyanovinyl-substituted carbazole-based materials

2017 ◽  
Vol 19 (9) ◽  
pp. 6721-6730 ◽  
Author(s):  
Marta Reig ◽  
Gintautas Bagdziunas ◽  
Dmytro Volyniuk ◽  
Juozas V. Grazulevicius ◽  
Dolores Velasco
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Single Crystals ◽  
Theoretical Calculations ◽  
Experimental Results ◽  
Supramolecular Organization ◽  
X Ray

The ambipolar charge transport properties of a series of push–pull carbazole-based semiconductors are here evaluated. The ambipolar characteristics depend on the supramolecular organization. Experimental results were confirmed and justified through the X-ray analysis of single crystals and by theoretical calculations.

Ein neuer Zugang zu ionischen Thionylimiden. Einkristallstruktur von N(CH3)4NSO / A New Access to Ionic Thionylimides. Single Crystal Structure of N(CH3)4NSO

1994 ◽  
Vol 49 (11) ◽  
pp. 1503-1506 ◽  
Author(s):  
S. Mann ◽  
M. Jansen
Keyword(s):  
Crystal Structure ◽  
Ion Exchange ◽  
Single Crystal ◽  
Single Crystals ◽  
Liquid Ammonia ◽  
Single Crystal Structure ◽  
X Ray ◽  
Cscl Type ◽  
Tetraalkylammonium Halides ◽  
Preparative Route

AbstractSingle crystals of N(CH3)4NSO have been prepared via ion exchange from RbNSO or CsNSO and tetraalkylammonium halides in liquid ammonia and investigated by X-ray single crystal techniques (I4̅, a = 1137.6(1), c = 1134.9(2) pm, Z = 8, T = -100 °C). The crystal structure of N(CH3)4NSO is related to the CsCl-type of structure. Using the same preparative route NMe3BzNSO has been obtained. Its lattice powder data (orthorhombic primitive; a = 896.3(2), b = 1235.4(3), c = 1070.7(4) pm).

scholarly journals Floating Zone Growth of Sr Substituted Han Purple: Ba0.9Sr0.1CuSi2O6

Crystals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 273
Author(s):  
Pascal Puphal ◽  
Stephan Allenspach ◽  
Christian Rüegg ◽  
Ekaterina Pomjakushina
Keyword(s):  
Magnetic Susceptibility ◽  
Single Crystals ◽  
Inelastic Neutron ◽  
Floating Zone ◽  
X Ray Diffraction ◽  
High Quality ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Zone Growth

We present a route to grow single crystals of Ba 0.9 Sr 0.1 CuSi 2 O 6 suitable for inelastic neutron studies via the floating zone technique. Neutron single crystal diffraction was utilized to check their bulk quality and orientation. Finally, the high quality of the grown crystals was proven by X-ray diffraction and magnetic susceptibility.

Transport Properties and Magnetism of β-MnO2

1999 ◽  
Vol 602 ◽  
Author(s):  
H. Sato ◽  
T. Enoki ◽  
K. Wakiya ◽  
M. Isobe ◽  
Y. Ueda ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Single Crystal ◽  
Transport Properties ◽  
Strong Coupling ◽  
Lattice Distortion ◽  
Magnetic Ordering ◽  
Temperature Dependent ◽  
X Ray ◽  
Conduction Electrons ◽  
Comprehensive Study

AbstractA comprehensive study of transport properties and magnetism on β-MnO2 reveals the strong coupling between the conduction electrons and the localized spins which are supposed to form a magnetic helix below TN ∼ 92 K. We also show the direct evidences of the helical magnetism by means of the measurements of the anisotropy in the magnetic susceptibility and the observation of x ray magnetic scatterings on a single crystal of β-MnO2. These results are consistent with proper-type helix model proposed by Yoshimori [J. Phys. Soc. Jpn. 14, p. 807 (1959)]. This model also qualitatively agrees with the anisotropy in magnetoresistance that appears below TN. The pitch of the magnetic helix is not commensurate to the lattice and it is slightly temperature dependent. The intensity of several Bragg peaks drastically changes at TN suggesting that the magnetic ordering is accompanied by a lattice distortion.

scholarly journals Suppressing vanadium crossover using sulfonated aromatic ion exchange membranes for high performance flow batteries

2020 ◽  
Vol 1 (7) ◽  
pp. 2206-2218
Author(s):  
Tongshuai Wang ◽  
Junyoung Han ◽  
Kihyun Kim ◽  
Andreas Münchinger ◽  
Yuechen Gao ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Ion Transport ◽  
Transport Properties ◽  
High Performance ◽  
Ion Selectivity ◽  
Ion Exchange Membranes ◽  
Flow Battery ◽  
The Right ◽  
Exchange Membrane ◽  
Performance Flow

Novel ion exchange membrane with just the right width of selective aqueous ionic domain (<0.6 nm) and unique functionalities show extraordinary ion selectivity. These unique ion transport properties of our membrane is reflected in a remarkable flow battery performance.

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