Volume 78, Number 5, June 2007
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||22 May 2007|
Magnetic structure and phase diagram in a spin-chain system:
Russian Federal Nuclear Center - VNIIEF, Sarov, 607188, Russia
Accepted: 25 April 2007
A transformation of the low-temperature magnetic structure governed by the 2D Ising model to the high-temperature honeycomb structure in the frustrated spin-chain compound Ca3Co2O6 is investigated. It is shown that the crossover between the two magnetic structures at 12 K arises from the entropy accumulated in the disordered chains. This interpretation is in an agreement with the experimental data. General rules for the phase diagram of frustrated Ising chain compounds are formulated.
PACS: 75.25.+z – Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source X-ray scattering, etc.) / 75.30.Kz – Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.) / 75.50.Lk – Spin glasses and other random magnets
© Europhysics Letters Association, 2007
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.