In Situ NMR Study of Dislocation Jump Distance During Creep of Pure Sodium Chloride Single Crystals

1990 ◽  
Vol 73 (4) ◽  
pp. 861-865 ◽  
Author(s):  
K. Linga Murty ◽  
Dietmar Begert ◽  
Rolf Munter ◽  
Otmar Kanert
Keyword(s):  
Sodium Chloride ◽  
Single Crystals ◽  
Nmr Study ◽  
Jump Distance ◽  
In Situ Nmr

In-Situ NMR Study of Dislocation Jump Distance During Creep of Pure and Doped NACL Single Crystals

1988 ◽  
Vol 142 ◽  
Author(s):  
K. Linga Murty ◽  
O. Kanert
Keyword(s):  
Steady State ◽  
Single Crystals ◽  
Pulse Sequence ◽  
Subgrain Size ◽  
Steady State Creep ◽  
Spin Lattice Relaxation ◽  
Relaxation Rates ◽  
Nmr Study ◽  
Jump Distance

AbstractNuclear magnetic resonance pulse techniques are used in-situ during creep of single crystals of NaCl to evaluate the contribution of mobile dislocations to spin relaxation. 23Na spin-lattice relaxation rates were measured in the rotating frame (T1ρ) during compression creep of single crystals of NaCl along [110] direction at 473K at an applied stress of 20 MPa. The relaxation rates are evaluated from the spin-echo height following π/2, locking and 67° pulse sequence. The height of the free induction decay decreased as soon as the load is applied followed by a gradual increase until the steady-state is reached, at which point a saturation value is observed corresponding to the constant steady-state creep-rate. The mean jump distance of the mobile dislocations, evaluated from the ratio of the signal heights without deformation and during creep, decreased with time/strain reaching a constant value during steady-state creep regime. The results are compared with the dislocation-dislocation spacing, subgrain size as well as the jump distance predicted from creep models. The effects of dilvalent Ca and solid solution with LiCl are examined.

In situ NMR study of hydrogenation/dehydrogenation of ZrCr2 and physisorbed hydrogen

2012 ◽  
Vol 540 ◽  
pp. 222-227 ◽  
Author(s):  
Jamil Ahmad ◽  
Hideki Maekawa ◽  
Hitoshi Takamura ◽  
Itaru Oikawa ◽  
Mariko Ando ◽  
...  
Keyword(s):  
Nmr Study ◽  
In Situ Nmr

scholarly journals Investigating the effect of a fluoroethylene carbonate additive on lithium deposition and the solid electrolyte interphase in lithium metal batteries using in situ NMR spectroscopy

2020 ◽  
Vol 8 (30) ◽  
pp. 14975-14992 ◽  
Author(s):  
Anna B. Gunnarsdóttir ◽  
Sundeep Vema ◽  
Svetlana Menkin ◽  
Lauren E. Marbella ◽  
Clare P. Grey
Keyword(s):  
Formation Rate ◽  
Solid Electrolyte Interphase ◽  
Lithium Metal Batteries ◽  
Nmr Study ◽  
Fluoroethylene Carbonate ◽  
Fast Transport ◽  
Fluoroethylene Carbonate Additive ◽  
In Situ Nmr Spectroscopy ◽  
In Situ Nmr

An in situ NMR study of Li deposition and the SEI on Li metal. Isotope exchange measurements reveal the fast transport properties in the SEI formed with FEC and the accelerated SEI formation rate, in part explaining the homogeneous electrodeposition using FEC additives.

scholarly journals In Situ NMR Study on the Interaction between LiBH4–Ca(BH4)2 and Mesoporous Scaffolds

2012 ◽  
Vol 3 (20) ◽  
pp. 2922-2927 ◽  
Author(s):  
Hyun-Sook Lee ◽  
Son-Jong Hwang ◽  
Hoon Kee Kim ◽  
Young-Su Lee ◽  
Jinsol Park ◽  
...  
Keyword(s):  
Nmr Study ◽  
In Situ Nmr
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