Phase diagram with an enhanced spin-glass region of the mixed Ising–XYmagnet LiHoxEr1−xF4
| Autor: | Karl Krämer, N. Nikseresht, S. Mat'as, Niels Bech Christensen, Mark Laver, Henrik M. Rønnow, J. O. Piatek, Karel Prokes, B. Dalla Piazza, Ivica Živković, N. Tsyrulin |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Spin glass Condensed matter physics 02 engineering and technology Neutron scattering 021001 nanoscience & nanotechnology Condensed Matter Physics Condensed Matter::Disordered Systems and Neural Networks 01 natural sciences Electronic Optical and Magnetic Materials Ferromagnetism Magnet Phase (matter) 0103 physical sciences Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Ising model 010306 general physics 0210 nano-technology Phase diagram |
| Zdroj: | Physical Review B. 88 |
| ISSN: | 1550-235X 1098-0121 |
| DOI: | 10.1103/physrevb.88.014408 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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