Magneto-optical study of the magnetic phase diagram of the dilute metamagnet FepMg1-pCl2

Wood, T. E.; Day, Peter

doi:10.1088/0022-3719/10/11/012

Cited by 34 publications

(7 citation statements)

References 15 publications

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“…in the mixed phase at low temperatures. In agreement with Wood and Day [9] we find 8 KST t S9 K (Fig. 2, curves 3 and 4).…”

Section: Methodssupporting

confidence: 91%

“…At higher concentrations RFIM properties are obscured by either spin-glass behavior (Me=Mg [7]) or xy-type spin anisotropy (Me=Co [8]). Furthermore, only moderate fields are allowed in order to avoid metamagnetic transitions into spin-flip phases [9]. Under these constraints we recently investigated the uniform magnetization M of both FeO.7MgO.3CI2 [10] and FeO.8CoO.2CI2 [11] by the Faraday rotation (FR) technique in applied fields HSO.4 T. In accordance with scaling predictions [3,12] both (aM/aT)H and (aM/aH)T were found to diverge logarithmically, and Tc(H) shifts with a crossover exponent ~-1.40.…”

Section: Introductionmentioning

confidence: 99%

“…The results will be compared with partial H-T diagrams obtained from light scattering in the mixed paramagnetic-antiferromagnetic phase [9]. All data were obtained after zero-field cooling, hence preserving the long-range ordered AF ground state during subsequent scans vs Hand T, respectively [3J.…”

Section: Introductionmentioning

confidence: 99%

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FARADAY ROTATION OF THE RANDOM FIELD ISING MODEL SYSTEM Fe0.7Mg0.3Cl2

Leitão¹,

Kleemann²

1987

J. Magn. Soc. Jpn.

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Faraday rotation and magnetic circular dichroism were used to determine the magnetic phase diagram of FeO.7MgO.3Cl2 in an axial magnetic field. The tricritical point appears well-defined (Hi,t-O.6 T, T t -8.5 K) provided that the data are taken after zero-field cooling. Random field crossover is observed below Hi-O.4 T with an exponent ~=1.41±0.05 along with logarithmic divergences of (aM/aT)H and (aM/aH)T' The crossover into random field tricritical behavior is discussed with regard to recent theory.

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“…in the mixed phase at low temperatures. In agreement with Wood and Day [9] we find 8 KST t S9 K (Fig. 2, curves 3 and 4).…”

Section: Methodssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

FARADAY ROTATION OF THE RANDOM FIELD ISING MODEL SYSTEM Fe0.7Mg0.3Cl2

Leitão¹,

Kleemann²

1987

J. Magn. Soc. Jpn.

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“…[17][18][19], the authors have investigated multilayers consisting of different ferromagnetic materials with antiferromagnetic coupling at the interfaces and obtained some interesting results. On the other hand, there is a class of magnetic substances that are well approximated by simple or site-diluted Ising systems [20][21][22]. Notable examples are Cs 3 Cl 5 ; DyPo 4 ; Fe p Mg 1Àp Cl 2 ; Fe p Co 1Àp Cl 2 and Cd 1Àp Mn p Te: Each of them may be a promising candidate for being prepared in the form of a superlattice and the critical measurements.…”

Section: Introductionmentioning

confidence: 99%

The phase diagrams and the order parameters of the diluted superlattice with antiferromagnetic interface coupling

Oubelkacem

Aouad

Bentaleb

et al. 2004

Journal of Magnetism and Magnetic Materials

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“…Finally, the observed T ,T and H (the critical field) are tabulatea. ~ese re~ults are compared to other recently published observations of critical behavior in doped FeC1 2 [5].…”

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confidence: 96%

Tricritical behavior in randomly disordered Fe1−xCl2 : Cdx

Egbert

Yen

Farge

et al. 1978

Journal of Applied Physics

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We have determined the magnetic phase diagrams of Fe1−xCl2 : Cdx (x=0, 0.09, 0.11, 0.17, 0.24). Below the tricritical temperature Tc the antiferroparamagnetic mixed phase is easily detectable because it strongly scatters visible light. This light scattering allowed us to map the first order phase boundaries up to Tc. Above Tc the optical density of the 426.8 nm absorption line changes at the continuous phase transition. Well defined tricritical and Néel temperatures were observed in each sample. Randomly quenched disorder introduced by the cadmium impurities reduced Tn and Tc but did not destroy the tricritical behavior. We present phase diagrams for each of the doped samples and plot Tn, Tc, and Hc (the critical field) as functions of Cd concentration.

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Magneto-optical study of the magnetic phase diagram of the dilute metamagnet Fe_pMg_1-pCl₂

Cited by 34 publications

References 15 publications

FARADAY ROTATION OF THE RANDOM FIELD ISING MODEL SYSTEM Fe0.7Mg0.3Cl2

FARADAY ROTATION OF THE RANDOM FIELD ISING MODEL SYSTEM Fe0.7Mg0.3Cl2

The phase diagrams and the order parameters of the diluted superlattice with antiferromagnetic interface coupling

Tricritical behavior in randomly disordered Fe1−xCl2 : Cdx

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