Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
3
From page
373
To page
375
Abstract
The mechanical spectrum of bilayer cuprate La1.82Sr0.18CaCu2O6+δ (La2126) was measured using the vibrating reed method from 30 K to room temperature at kilohertz frequency. A clear modulus softening was observed at 223 K accompanied by a sharp internal friction peak, which evidences a phase transition. Another broad internal friction peak around 250 K was observed, accompanied by a large modulus change. This contrasts with the broad internal friction peak of Ca doped Y Ba2Cu3O7−δ (Y123) for which no clear modulus change was observed. The main contribution to the broad internal friction peak of La2126 is expected to be from the glass transition of the interstitial oxygen atoms.
Journal title
Acta Tropica
Serial Year
2007
Journal title
Acta Tropica
Record number
1750005
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