23Na spin-lattice relaxation in powder Rochelle salt

C. Tien; E. V. Charnaya; M. K. Lee; S. V. Baryshnikov

doi:10.1134/S1063783407070220

²³Na spin-lattice relaxation in powder Rochelle salt

C. Tien, E. V. Charnaya, M. K. Lee, S. V. Baryshnikov

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Abstract

The temperature dependence of ²³Na spin-lattice relaxation in the polycrystalline Rochelle salt was studied by NMR within the range from 235 to 320 K covering both Curie points. The spin-relaxation time t ₁ versus temperature curve showed noticeable dips near the phase transitions against the background of the regular decrease in the relaxation time upon increasing temperature. The dips observed were ascribed to critical contributions to sodium spin-lattice relaxation caused by the slowdown of the correlation time for one of two relaxation modes in the Rochelle salt. The ²³Na NMR parameters were also measured for the melted Rochelle salt.

Original language	English
Pages (from-to)	1326-1329
Number of pages	4
Journal	Physics of the Solid State
Volume	49
Issue number	7
DOIs	https://doi.org/10.1134/S1063783407070220
Publication status	Published - 2007 Jul

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "23Na spin-lattice relaxation in powder Rochelle salt",

abstract = "The temperature dependence of 23Na spin-lattice relaxation in the polycrystalline Rochelle salt was studied by NMR within the range from 235 to 320 K covering both Curie points. The spin-relaxation time t 1 versus temperature curve showed noticeable dips near the phase transitions against the background of the regular decrease in the relaxation time upon increasing temperature. The dips observed were ascribed to critical contributions to sodium spin-lattice relaxation caused by the slowdown of the correlation time for one of two relaxation modes in the Rochelle salt. The 23Na NMR parameters were also measured for the melted Rochelle salt.",

author = "C. Tien and Charnaya, {E. V.} and Lee, {M. K.} and Baryshnikov, {S. V.}",

note = "Funding Information: ACKNOWLEDGMENTS The present work was supported by National Cheng Kung University (Taiwan), under Grand OUA 95-21T-2-017, by DFG (Germany), and RFBR (Russia).",

year = "2007",

month = jul,

doi = "10.1134/S1063783407070220",

language = "English",

volume = "49",

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TY - JOUR

T1 - 23Na spin-lattice relaxation in powder Rochelle salt

AU - Tien, C.

AU - Charnaya, E. V.

AU - Lee, M. K.

AU - Baryshnikov, S. V.

N1 - Funding Information: ACKNOWLEDGMENTS The present work was supported by National Cheng Kung University (Taiwan), under Grand OUA 95-21T-2-017, by DFG (Germany), and RFBR (Russia).

PY - 2007/7

Y1 - 2007/7

N2 - The temperature dependence of 23Na spin-lattice relaxation in the polycrystalline Rochelle salt was studied by NMR within the range from 235 to 320 K covering both Curie points. The spin-relaxation time t 1 versus temperature curve showed noticeable dips near the phase transitions against the background of the regular decrease in the relaxation time upon increasing temperature. The dips observed were ascribed to critical contributions to sodium spin-lattice relaxation caused by the slowdown of the correlation time for one of two relaxation modes in the Rochelle salt. The 23Na NMR parameters were also measured for the melted Rochelle salt.

AB - The temperature dependence of 23Na spin-lattice relaxation in the polycrystalline Rochelle salt was studied by NMR within the range from 235 to 320 K covering both Curie points. The spin-relaxation time t 1 versus temperature curve showed noticeable dips near the phase transitions against the background of the regular decrease in the relaxation time upon increasing temperature. The dips observed were ascribed to critical contributions to sodium spin-lattice relaxation caused by the slowdown of the correlation time for one of two relaxation modes in the Rochelle salt. The 23Na NMR parameters were also measured for the melted Rochelle salt.

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JO - Physics of the Solid State

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ER -

²³Na spin-lattice relaxation in powder Rochelle salt

Abstract

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