ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
In this article we study the magnetic behavior of a series of copper-deficient spin-glass compounds La1.85Sr0.15Cu1−εO4−δ. High-quality ceramic samples were prepared by a sol–gel technique. Stoichiometry and structural characterization of the specimens were verified by x-ray diffraction, inductively coupled plasma spectrometry, atomic absorption spectrophotometry, and thermogravimetric analysis. Low-field ac and dc magnetic measurements, carried out in a superconducting quantum interference device magnetometer for samples with ε=0.05, 0.15, and 0.25, revealed all major characteristics of a spin-glass system: thermal irreversibility, magnetic remanence, time-relaxation and frequency-dependent ac susceptibility. © 1999 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.370393
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