Phase diagram for a two-dimensional uniaxial dipolar antiferromagnet with an exchange interaction

✍ Scribed by A.B. MacIsaac; J.P. Whitehead; M.C. Robinson; K. De'Bell

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 152 KB
• Volume: 194-196
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(94)90441-3

✦ Synopsis

Monte Carlo simulation are used to study the magnetic properties of a two dimensional unixial spin system in which the spins are constrained to lie in the plane and couple through a combination of dipolar and nearest neighbour exchange interactions. The phase diagram that results from the variation of the coupling constant J is presented and discussed in relation to the observed ordering of the Er ions in the high Tc superconductor ErBa2Cu3OT-a. An estimate of the value of the coupling constant in ErBa2Cu3OT-a is given.