Deuterium NMR study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">D</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>O dynamics in glassy and liquid LiCl:<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">D</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Hagemeyer, Alfred; Kanert, O.; Balzer-Jöllenbeck, G.; Jain, Himanshu

doi:10.1103/physrevb.39.15

Cited by 18 publications

(1 citation statement)

References 22 publications

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“…There is a close formal analogy of F(t,t) with the intermediate incoherent neutron scattering function. 24 The potential of measurements of F(t,t) has widely been demonstrated and used by us and others in many cases, e.g.. [25][26][27][28][29] Experimentally, it is worthwhile to measure the t-dependence of F(t,t) for a set of t-values. In the context below we will focus on the normalized final state correlation which may be viewed-from the perspective of neutron scattering, as a generalized elastic incoherent structure factor (EISF).…”

Section: H Stimulated Echoesmentioning

confidence: 99%

A deuteron NMR study of the tetrahydrofuran clathrate hydrate

Kirschgen

Zeidler

Geil

et al. 2003

Phys. Chem. Chem. Phys.

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Section: H Stimulated Echoesmentioning

confidence: 99%

A deuteron NMR study of the tetrahydrofuran clathrate hydrate

Kirschgen

Zeidler

Geil

et al. 2003

Phys. Chem. Chem. Phys.

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Nuclear Spin Relaxation. Nuclear Spin Relaxation and Electrical Conductivity in Lithium Germanate Glasses

Kanert

Kloke

Küchler

et al. 1991

Ber Bunsenges Phys Chem

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'Li nuclear spin relaxation (NSR) in the laboratory frame ( T ) as well as in the rotating frame (T,J and electrical conductivity measurements were performed in (1 -x) GeOz. xLi,O glass series, where x = 0.001 to 0.36, between 3 K and the glass transition temperature (2: 700 K). Below about 250 K the NSR data can be interpreted consistently in the framework of thermally activated low-frequency excitations of disordered modes intrinsic to the glassy state of matter. The modes are described by asymmetric double well potential (ADWP) configurations with suitable densities of states. Above about 250 K the NSR rates increase exponentially with rising temperature due to diffusive jumps of the Li ions. Deduction of corresponding transport properties, however, from such data by means of standard NSR theories turns out to be difficult. Models are discussed to overcome these difficulties by relating NSR with electrical conductivity. The results are found to correspond best with Funke's model of a coupled motion of the ions caused by Coulomb interaction. IntroductionThe physical origin of dynamic properties of the glassy state is a subject of current interest. Microscopic experimental methods, such as neutron scattering or nuclear magnetic resonance (NMR) have proven to be successful tools for obtaining a more detailed insight into the nature of these properties. In particular, Nuclear Spin Relaxation (NSR) techniques provide detailed information about the mechanisms of atomic motion in solids [1,2]. Similar to quasielastic neutron scattering, however, the observed NSR rates are correlated with the motional process in a rather indirect manner via fluctuations of the actual nuclear spin hamiltonian which transfer energy from the spin system to the lattice. While the Zeeman NSR rate in the strong applied field Bo is sensitive to "fast" atomic motions (time scale a inverse Larmor frequency wo = yBo, i.e. of the order of lo-* s), the NSR rate in a weak rotating field B1 (B, 6 Bo) observes "slow" atomic motions (time scale cc 1/mo = l/(yBl), i.e. of the order of Generally, at low temperatures the relevant fluctuations which are responsible for the NSR process are commonly believed to be due to localized low-frequency excitations with a broad distribution of their characteristic parameters of disordered modes intrinsic to the glassy state of matter. The physical nature of the models, however, is still lacking and therefore a subject of current interest. At higher tems).

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Nuclear Spin Relaxation and Atomic Motion in Inorganic Glasses

Kanert¹

1990

25th Congress Ampere on Magnetic Resonance and Related Phenomena

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Deuterium NMR study ofD2O dynamics in glassy and liquid LiCl:D2

Cited by 18 publications

References 22 publications

A deuteron NMR study of the tetrahydrofuran clathrate hydrate

A deuteron NMR study of the tetrahydrofuran clathrate hydrate

Nuclear Spin Relaxation. Nuclear Spin Relaxation and Electrical Conductivity in Lithium Germanate Glasses

Nuclear Spin Relaxation and Atomic Motion in Inorganic Glasses

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