ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Results for low temperature specific heat for single crystals of ladder/chain materials Sr 14−x Ca x Cu 24 O 41 (x= 0, 8, 10, 11.5) in magnetic field up to ∼15 T are reported. A sharp peak of the specific heat of a single crystal Sr 2.5 Ca 11.5 Cu 24 O 41, was found at ∼ 2.3 K, clearly indicating the onset of a long range order. In measurements of the specific heat in magnetic fields the transition temperature, T N , was found to shift to lower temperatures with increasing magnetic field, indicating that the ordering is antiferromagnetic, which has been confirmed by neutron scattering measurements. With decreasing x T N rapidly shifts to lower temperatures. For x=10 T N decreases to ∼ 1 K and for x= 0 no anomaly indicating the transition was found down to ∼ 0.6K
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1022584320670
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