Abstract
We have prepared pure YBCO (YB2Cu3O7-δ) and Ni-doped YBCO (YB2-xLaxCu3-xNixO7-δ, x = 0.1) samples and performed 63,65Cu nuclear quadrupole resonance (NQR) measurements. La substitution introduced for charge compensation, as well as Ni doping, severely distorts the electric field gradient at the copper sites inducing extra 63,65Cu NQR peaks other than the main peaks, for both the plane and the chain sites. 63,65Cu NQR linewidths for the plane site increased significantly whereas those for the chain site remained similar. Furthermore, both the spin-lattice and the spin-spin relaxation times for the plane copper decreased whereas those for the chain copper increased. The Ni substitutional effects on linewidths and relaxation times confirm that Ni carrying a local moment substitutes for the plane copper.
| Original language | English |
|---|---|
| Pages (from-to) | 185-190 |
| Number of pages | 6 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 329 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Feb 1 2000 |
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ASJC Scopus subject areas
- Condensed Matter Physics
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63,65Cu nuclear quadrupole resonance study of Ni-doped YBa2Cu3O7. / Lee, Moohee; Halperin, W. P.; Poeppelmeier, Kenneth R.
In: Physica C: Superconductivity and its Applications, Vol. 329, No. 3, 01.02.2000, p. 185-190.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - 63,65Cu nuclear quadrupole resonance study of Ni-doped YBa2Cu3O7
AU - Lee, Moohee
AU - Halperin, W. P.
AU - Poeppelmeier, Kenneth R
PY - 2000/2/1
Y1 - 2000/2/1
N2 - We have prepared pure YBCO (YB2Cu3O7-δ) and Ni-doped YBCO (YB2-xLaxCu3-xNixO7-δ, x = 0.1) samples and performed 63,65Cu nuclear quadrupole resonance (NQR) measurements. La substitution introduced for charge compensation, as well as Ni doping, severely distorts the electric field gradient at the copper sites inducing extra 63,65Cu NQR peaks other than the main peaks, for both the plane and the chain sites. 63,65Cu NQR linewidths for the plane site increased significantly whereas those for the chain site remained similar. Furthermore, both the spin-lattice and the spin-spin relaxation times for the plane copper decreased whereas those for the chain copper increased. The Ni substitutional effects on linewidths and relaxation times confirm that Ni carrying a local moment substitutes for the plane copper.
AB - We have prepared pure YBCO (YB2Cu3O7-δ) and Ni-doped YBCO (YB2-xLaxCu3-xNixO7-δ, x = 0.1) samples and performed 63,65Cu nuclear quadrupole resonance (NQR) measurements. La substitution introduced for charge compensation, as well as Ni doping, severely distorts the electric field gradient at the copper sites inducing extra 63,65Cu NQR peaks other than the main peaks, for both the plane and the chain sites. 63,65Cu NQR linewidths for the plane site increased significantly whereas those for the chain site remained similar. Furthermore, both the spin-lattice and the spin-spin relaxation times for the plane copper decreased whereas those for the chain copper increased. The Ni substitutional effects on linewidths and relaxation times confirm that Ni carrying a local moment substitutes for the plane copper.
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U2 - 10.1016/S0921-4534(99)00565-1
DO - 10.1016/S0921-4534(99)00565-1
M3 - Article
AN - SCOPUS:0034135399
VL - 329
SP - 185
EP - 190
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 3
ER -