## Abstract

Measurement of the spin lattice relaxation time in H-doped Y_{2}BaCuO_{5} and YBa_{2}Cu_{3}O_{6} has revealed a power law growth of the nuclear magnetization M for short times following a saturation pulse sequence. Preliminary experimental results yield exponents of 1 2 and 1 3, depending on the amount of hydrogen present in the sample. We extend Blumberg's theory for relaxation due to paramagnetic centers via dipole-dipole interaction in the absence of spin diffusion to obtain M ∼ t^{D/6} where D is the dimensionality of the system. This yields exponents of 1 2 and 1 3 for three- and two-dimensional systems, respectively. At long times the magnetization growth becomes exponential.

Original language | English |
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Pages (from-to) | 23-27 |

Number of pages | 5 |

Journal | Solid State Nuclear Magnetic Resonance |

Volume | 3 |

Issue number | 1 |

DOIs | |

State | Published - 1 Jan 1994 |

## Keywords

- H-doped copperoxides
- dimensionality in spin lattice relaxation
- paramagnetism

## ASJC Scopus subject areas

- Radiation
- Chemistry (all)
- Nuclear and High Energy Physics
- Instrumentation