Phase diagram with an enhanced spin-glass region of the mixed Ising-XY magnet LiHoxEr1-xF4
Abstract
We present the experimental phase diagram of LiHoxEr1-xF4, a dilution series of dipolar-coupled model magnets. The phase diagram was determined using a combination of ac susceptibility and neutron scattering. Three unique phases in addition to the Ising ferromagnet LiHoF4 and the XY antiferromagnet LiErF4 have been identified. Below x=0.86, an embedded spin-glass phase is observed, where a spin glass exists within the ferromagnetic structure. Below x=0.57, an Ising spin glass is observed consisting of frozen needlelike clusters. For x∼0.3-0.1, an antiferromagnetically coupled spin glass occurs. A reduction of TC(x) for the ferromagnet is observed which disobeys the mean-field predictions that worked for LiHoxY1-xF4.
- Publication:
-
Physical Review B
- Pub Date:
- July 2013
- DOI:
- 10.1103/PhysRevB.88.014408
- arXiv:
- arXiv:1307.4271
- Bibcode:
- 2013PhRvB..88a4408P
- Keywords:
-
- 75.50.Dd;
- 75.50.Ee;
- 75.50.Lk;
- Nonmetallic ferromagnetic materials;
- Antiferromagnetics;
- Spin glasses and other random magnets;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 11 pages, 5 figures