Magnetic phase diagram of three-dimensional diluted Ising antiferromagnet Ni$_{0.8}$Mg$_{0.2}$(OH)$_{2}$
| dc.creator | Suzuki, Masatsugu | |
| dc.creator | Suzuki, Itsuko S. | |
| dc.creator | Onyango, Tedmann M. | |
| dc.creator | Enoki, Toshiaki | |
| dc.date | 2003-09-15 | |
| dc.date.accessioned | 2026-07-25T22:48:04Z | |
| dc.description | $H$-$T$ diagram of 3D diluted Ising antiferromagnet Ni$_{c}$Mg$_{1-c}$(OH)$_{2}$ with $c$ = 0.8 has been determined from measurements of SQUID DC magnetization and AC magnetic susceptibility. At $H$ = 0, this compound undergoes two magnetic phase transitions: an antiferromagnetic (AF) transition at the Néel temperature $T_{N}$ (= 20.7 K) and a reentrant spin glass (RSG) transition at $T_{RSG}$ ($\approx$ 6 K). The $H$-$T$ diagram consists of the RSG, spin glass (SG), and AF phases. These phases meet a multicritical point $P_{m}$ ($H_{m}$ = 42 kOe, $T_{m}$ = 5.6 K). The irreversibility of susceptibility defined by $δ$ (= $χ_{FC} - χ_{ZFC}$) shows a negative local minimum for 10 $\leq H \leq$ 35 kOe, suggesting the existence of possible glassy phase in the AF phase. A broad peak in $δ$ and $χ^{\prime \prime}$ at $H \geq$ 20 kOe for $T_{N}(c=0.8,H) \leq T \leq T_{N}(c=1,H=0)$ (= 26.4 K) suggests the existence of the Griffiths phase. | |
| dc.description | 11 pages, 14 figures; J. Phys. Soc. Jpn. 73 (2004) No. 1 issue, in press | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0309354 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0309354 | |
| dc.identifier | J. Phys. Soc. Jpn. 73 (2004) 206-215 | |
| dc.identifier | doi:10.1143/JPSJ.73.206 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/92636 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Magnetic phase diagram of three-dimensional diluted Ising antiferromagnet Ni$_{0.8}$Mg$_{0.2}$(OH)$_{2}$ | |
| dc.type | text |