Chapter 4 Field induced phase transitions in ferrimagnets

Zvezdin, A. K.

doi:10.1016/s1567-2719(05)80008-3

Cited by 39 publications

(36 citation statements)

References 119 publications

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“…For TbIG, T comp is equal to (243.5 ± 0.5 K) and (249.0 ± 0.5 K) for the single crystal and powder samples respectively (Lahoubi et al, 1985;Lahoubi, 1986). In the vicinity of T comp, the magnetic behavior is equivalent to that observed in the antiferromagnet compounds with the existence of the so-called field induced phase transitions which have been studied previously theoretically and experimentally (Zvezdin, 1995). In the Néel model, the RE 3+ magnetic behavior is described by the pure free ion Brillouin function assuming that the superexchange interactions are represented by the isotropic Weiss molecular field coefficients.…”

Section: Introductionmentioning

confidence: 84%

Temperature Evolution of the Double Umbrella Magnetic Structure in Terbium Iron Garnet

Lahoubi¹

2012

Neutron Diffraction

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Section: Introductionmentioning

confidence: 84%

Temperature Evolution of the Double Umbrella Magnetic Structure in Terbium Iron Garnet

Lahoubi¹

2012

Neutron Diffraction

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“…Field induced phase transitions are valuable means for studying various aspects of solid state physics such as the exchange interactions in a broad range of bulk and mesoscopic materials [3].…”

Section: The First Order Fipt In the Rco Itinerant Metamagnetsmentioning

confidence: 99%

“…The antiferromagnetic indirect interaction between the magnetic ions embedded within the molecules results in ferrimagnetic ground state of the molecules. However, there is a significant difference between the magnetization process of bulk and mesoscopic ferrimagnetic materials that can be seen from the slide 18: the former has a monotonous increase of magnetization with the external magnetic field and a plateau on its magnetic susceptibility curve while the latter has specific quantum steps on magnetization and oscillations of susceptibility with the field [3].…”

Section: The Full Magnetization Process In Ferrimagnets Difference Bmentioning

confidence: 99%

Field‐induced phase transitions (FIPT) in molecular magnets

Barbara

Kostyuchenko²,

Mischenko

et al. 2004

phys. stat. sol. (c)

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PACS 75.50.Gg, 75.50.Xx Ultrahigh magnetic fields (B = 100 -1000 T) are valuable means for many-sided research in solid state physics. A brief description of the explosion method and some results of its application are presented. The magnetic coil compensation method has been used to study the first order phase transitions in a broad range of fields and temperatures. The Faraday rotation method has been applied to measure the second order magnetic phase transitions. A number of magnetic materials were studied experimentally and theoretically: first order phase transitions in RCo 2 compounds, second order transitions in KMnF 3 , MnF 2 , etc. and steplike quantum magnetization process (transition from ferrimagnetic to ferromagnetic phase) in some mesoscopic magnets -Mn 12 Ac, Mn 6 Rad 6 and V 15 . These magnetic measurements provide us with a direct and unique method of determination of the exchange interactions between magnetic ions in magnetic moleculas. The knowledge of the magnetic interacion energies is important for molecular engineering in order to design new magnetic nanoscale materials with desireable properties. The intramolecule exchange integrals of the magnetic nanoclusters Mn 12 Ac, Mn 6 Rad 6 and V 15 that have been determined by this method are presented.

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“…The many interesting magnetic properties at low temperature which is often taken in account including strong magnetocrystalline anisotropy, spontaneous non-collinear magnetic structures (double umbrella-type), SR and FI magnetic phase transitions and their complicated experimental MPD in the vicinity of the compensation temperature, have been thoroughly reviewed by Guillot [2] and Zvezdin [3]. The occurrence of the so-called <uuw> and <uv0> angular LT phases where the iron sublattices magnetisation M Fe l i e s on a low symmetry direction are studied experimentally [4,5,6] and theoretically [7,8] by using different phenomenological models based on the generalized spin effective Hamiltonian broadly applicable to such magnetic transitions.…”

Section: Introductionmentioning

confidence: 99%