Low temperature heat capacity of R2Cu2O5 (R = Y, Tb, Dy, Ho, Er, Tm, Yb, Lu) compounds

✍ Scribed by V.V. Moshchalkov; N.A. Samarin; Y. Zoubkova; B.V. Mill

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 180 KB
• Volume: 163
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(90)90178-w

✦ Synopsis

Heat capacity of rare earth cuprates R,Cu,O, (R = Y, Tb-Lu) has been measured in the temperature range from 2.0 to 30 K. Specific heat anomalies corresponding to antiferromagnetic ordering of Cu '* ions are found. The NCel temperatures vary from TN = 10 K (R = Dy) to TN = 25 K (R = Er). For Yb,Cu,O, and Dy,Cu,O, compounds, additional sharp peaks are observed at temperatures T = 9.5 K (R = Dy) and T = 6.8 K (R = Yb). These peaks may be associated with a spin-reorientation transition. Samples with Ho, Tm, Tb and Yb reveal Schottky anomalies