Nuclear magnetic relaxation in the quasi-two-dimensional (C 2H5NH3)2Cd1-xMn xCl4 mixed crystal systems

J. T. Kim; J. K. Park; C. H. Lee; K. W. Lee; E. H. Choi; Cheol Eui Lee

doi:10.1016/j.ssc.2013.12.014

Nuclear magnetic relaxation in the quasi-two-dimensional (C ₂H₅NH₃)₂Cd_1-xMn _xCl₄ mixed crystal systems

J. T. Kim
, J. K. Park
, C. H. Lee
, K. W. Lee
, E. H. Choi
, Cheol Eui Lee^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

We have studied the quasi-two-dimensional layered compound systems (C ₂H₅NH₃)₂Cd_1-xMn _xCl₄ (0≤x≤1) by means of ¹H nuclear magnetic resonance (NMR) measurements. In contrast to the case of the unmixed crystal compounds (x=0, 1) following a single-exponential type of the NMR spin-lattice relaxation, a stretched-exponential type of recovery, M(t)= ^M0[1-exp(-t/T1_S)n], was necessary for the stoichiometric composition systems in addition to it, the exponent n depending on the randomly distributed paramagnetic Mn impurity concentration x. The spin-lattice relaxation rate T1S-1 thus obtained showed a maximum at a percolation threshold ^xc≈0.3, in agreement with a percolation theory of the paramagnetic impurity relaxation. The stacking dimensions of the paramagnetic ions were derived from the exponent n as a function of x.

Original language	English
Pages (from-to)	47-49
Number of pages	3
Journal	Solid State Communications
Volume	182
DOIs	https://doi.org/10.1016/j.ssc.2013.12.014
Publication status	Published - 2014 Mar

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (Project nos. 2013057555 , 2012034779 , and NRF-2010-0027963 ). The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

Keywords

A. Perovskite-type layered compounds
D. Percolation theory of paramagnetic impurity relaxation
E. Nuclear magnetic resonance

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/j.ssc.2013.12.014

Cite this

@article{b4ab76830aeb4d5288bd0e9e6059025a,

title = "Nuclear magnetic relaxation in the quasi-two-dimensional (C 2H5NH3)2Cd1-xMn xCl4 mixed crystal systems",

abstract = "We have studied the quasi-two-dimensional layered compound systems (C 2H5NH3)2Cd1-xMn xCl4 (0≤x≤1) by means of 1H nuclear magnetic resonance (NMR) measurements. In contrast to the case of the unmixed crystal compounds (x=0, 1) following a single-exponential type of the NMR spin-lattice relaxation, a stretched-exponential type of recovery, M(t)= M0[1-exp(-t/T1S)n], was necessary for the stoichiometric composition systems in addition to it, the exponent n depending on the randomly distributed paramagnetic Mn impurity concentration x. The spin-lattice relaxation rate T1S-1 thus obtained showed a maximum at a percolation threshold xc≈0.3, in agreement with a percolation theory of the paramagnetic impurity relaxation. The stacking dimensions of the paramagnetic ions were derived from the exponent n as a function of x.",

keywords = "A. Perovskite-type layered compounds, D. Percolation theory of paramagnetic impurity relaxation, E. Nuclear magnetic resonance",

author = "Kim, \{J. T.\} and Park, \{J. K.\} and Lee, \{C. H.\} and Lee, \{K. W.\} and Choi, \{E. H.\} and Lee, \{Cheol Eui\}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (Project nos. 2013057555 , 2012034779 , and NRF-2010-0027963 ). The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.",

year = "2014",

month = mar,

doi = "10.1016/j.ssc.2013.12.014",

language = "English",

volume = "182",

pages = "47--49",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Nuclear magnetic relaxation in the quasi-two-dimensional (C 2H5NH3)2Cd1-xMn xCl4 mixed crystal systems

AU - Kim, J. T.

AU - Park, J. K.

AU - Lee, C. H.

AU - Lee, K. W.

AU - Choi, E. H.

AU - Lee, Cheol Eui

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (Project nos. 2013057555 , 2012034779 , and NRF-2010-0027963 ). The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

PY - 2014/3

Y1 - 2014/3

N2 - We have studied the quasi-two-dimensional layered compound systems (C 2H5NH3)2Cd1-xMn xCl4 (0≤x≤1) by means of 1H nuclear magnetic resonance (NMR) measurements. In contrast to the case of the unmixed crystal compounds (x=0, 1) following a single-exponential type of the NMR spin-lattice relaxation, a stretched-exponential type of recovery, M(t)= M0[1-exp(-t/T1S)n], was necessary for the stoichiometric composition systems in addition to it, the exponent n depending on the randomly distributed paramagnetic Mn impurity concentration x. The spin-lattice relaxation rate T1S-1 thus obtained showed a maximum at a percolation threshold xc≈0.3, in agreement with a percolation theory of the paramagnetic impurity relaxation. The stacking dimensions of the paramagnetic ions were derived from the exponent n as a function of x.

AB - We have studied the quasi-two-dimensional layered compound systems (C 2H5NH3)2Cd1-xMn xCl4 (0≤x≤1) by means of 1H nuclear magnetic resonance (NMR) measurements. In contrast to the case of the unmixed crystal compounds (x=0, 1) following a single-exponential type of the NMR spin-lattice relaxation, a stretched-exponential type of recovery, M(t)= M0[1-exp(-t/T1S)n], was necessary for the stoichiometric composition systems in addition to it, the exponent n depending on the randomly distributed paramagnetic Mn impurity concentration x. The spin-lattice relaxation rate T1S-1 thus obtained showed a maximum at a percolation threshold xc≈0.3, in agreement with a percolation theory of the paramagnetic impurity relaxation. The stacking dimensions of the paramagnetic ions were derived from the exponent n as a function of x.

KW - A. Perovskite-type layered compounds

KW - D. Percolation theory of paramagnetic impurity relaxation

KW - E. Nuclear magnetic resonance

UR - https://www.scopus.com/pages/publications/84891847449

U2 - 10.1016/j.ssc.2013.12.014

DO - 10.1016/j.ssc.2013.12.014

M3 - Article

AN - SCOPUS:84891847449

SN - 0038-1098

VL - 182

SP - 47

EP - 49

JO - Solid State Communications

JF - Solid State Communications

ER -