Rapport sur quelques recherches dans le domaine du magnétisme aux laboratoires Philips

Casimir, H. B. G.; Smit, J.; Enz, U.; Fast, Jessica; Wijn, H.P.J.; Gorter, Evert; Duyvesteyn, A.J.W.; Fast, J. D.; Jong, J.J. de

doi:10.1051/jphysrad:01959002002-3036000

Cited by 100 publications

(23 citation statements)

References 7 publications

(6 reference statements)

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“…I n order t o calculate H,i,theor it was necessary to determine Kl and M , in the system Sr-Ba-ferrite and to complete the values for Ba-ferrite ( K , = = 3.3 x 106 erg Ms = 380 G [13]) and Sr-ferrite (2 K,/M, = 19 kOe [14]), depending on the methods of crystal growth.…”

Section: Introductionmentioning

confidence: 99%

The Coercivity of Hard Ferrite Single Crystals

Jahn

Müller

1969

Physica Status Solidi (b)

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Section: Introductionmentioning

confidence: 99%

The Coercivity of Hard Ferrite Single Crystals

Jahn

Müller

1969

Physica Status Solidi (b)

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“…Ni 17 -type crystal structure which leads to spin-reorientations. Since the second anisotropy constant K 2 > 0, the SRT occurs as two second-order type phase transitions, easy-plane-easy-cone and easy-cone-easy-axis [12]; T SR1 ∼ 680 K and T SR2 ∼ 730 K in Lu 2 Co 17 (see the inset of Fig. 2b and Fig.…”

Section: Resultsmentioning

confidence: 99%

Magnetic Anisotropy of Lu₂Co_17-xSi_xSingle Crystals

et al. 2008

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Magnetic anisotropy of Lu 2 Co 17−x Si x single crystals grown by the Czochralski method was investigated. The homogeneity range of Si substitution for Co extends up to x = 3.4 in Lu2Co17−xSix solid solutions. The unit cell volume, Curie temperature, and spontaneous magnetic moment decrease monotonously with increasing Si content. Lu2Co17 has the easyplane type of magnetic anisotropy in the ground state, which changes into the easy-axis type by two spin-reorientation transitions of the second-order, the easy-plane-easy-cone at T SR1 ∼ 680 K and the easy-cone -easy-axis at TSR2 ∼ 730 K. Upon Si substitution, the observed spin-reorientations shift towards the lower temperatures for Lu 2 Co 17−x Si x (T SR1 ∼ 75 K and TSR2 ∼ 130 K in Lu2Co16Si) and vanish for compounds with 1 < x ≤ 3.4, which have the uniaxial type of magnetic anisotropy in the whole temperature range of magnetic order. ) and Gd 3+ (Gd does not contribute to anisotropy) give information on the Co sublattice anisotropy and its changes upon partial substitution by a third M element. Previous investigations with Si were carried out on polycrystalline samples; however, single crystals are strongly desirable for the magnetic anisotropy investigations. The presence of the spontaneous spin-reorientation transitions (SRT) from the easy-plane to the easy-axis was reported in [4,6,7] along with the change of the MA type upon Si substitution for compounds with Y and Gd, whereas Ce 2 Co 17−x Si x compounds were found to be uniaxial for all Si content. There are some works dedicated to the study of magnetic anisotropy of Lu 2 Co 17 single

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“…According to the theoretical and experimental analysis of the magnetic stability regions, [23,24] the SRT process can proceed over three different paths, i.e. through: the point with zero anisotropy, a coexistence of easy-axis and easy-plane anisotropy or a region with canted magnetization.…”

Section: Discussionmentioning

confidence: 99%

MgO thickness-induced spin reorientation transition in Co0.9Fe0.1/MgO/Co0.9Fe0.1 structure

Lasek

Gładczuk

Sawicki

et al. 2017

Journal of Magnetism and Magnetic Materials

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The magnetic anisotropy (MA) of Mo/Au/Co 0.9 Fe 0.1 /Au/MgO(0.7 -3 nm)/Au/Co 0.9 Fe 0.1 /Au heterostructure has been investigated at room temperature as a function of MgO layer thickness (t MgO ). Our studies show that while the MA of the top layer does not change its character upon variation of t MgO , the uniaxial out-of-plane MA of the bottom one undergoes a spin reorientation transition at t MgO of about 0.8 nm, switching to the regime where the coexistence of in-and out-ofplane magnetization alignments is observed. The magnitudes of the magnetic anisotropy constants have been determined from ferromagnetic resonance and dc-magnetometry measurements. The origin of MA evolution has been attributed to a presence of an interlayer exchange coupling (IEC) between Co 0.9 Fe 0.1 layers through the thin MgO film.

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Rapport sur quelques recherches dans le domaine du magnétisme aux laboratoires Philips

Cited by 100 publications

References 7 publications

The Coercivity of Hard Ferrite Single Crystals

The Coercivity of Hard Ferrite Single Crystals

Magnetic Anisotropy of Lu₂Co_17-xSi_xSingle Crystals

MgO thickness-induced spin reorientation transition in Co0.9Fe0.1/MgO/Co0.9Fe0.1 structure

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Rapport sur quelques recherches dans le domaine du magnétisme aux laboratoires Philips

Cited by 100 publications

References 7 publications

The Coercivity of Hard Ferrite Single Crystals

The Coercivity of Hard Ferrite Single Crystals

Magnetic Anisotropy of Lu2Co17-xSixSingle Crystals

MgO thickness-induced spin reorientation transition in Co0.9Fe0.1/MgO/Co0.9Fe0.1 structure

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Product

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Magnetic Anisotropy of Lu₂Co_17-xSi_xSingle Crystals