MOKE study of Co/Ti/(Gd–Co) multilayers near the magnetic compensation state

Svalov, A. V.; Fernández, Antonio Maestro; Vas’kovskiy, V. O.; Kurlyandskaya, G.V.; Barandiarán, J.M.; Antón, Ricardo López; Tejedor, M.

doi:10.1016/j.jallcom.2005.10.001

Cited by 9 publications

(7 citation statements)

References 28 publications

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“…The pure element metal pieces were placed inside water cooled copper crucible and have been heated by magnetically focused electron beam, 3.1 kV for Fe (crucible1) and 4.5 kV for Dy (crucible2) and electric energy 2.7 kW (Fe) and 2.5 kW for (Dy). The evaporated target metals were deposited on the top-surface of both, the hexagonally ordered and randomly disordered nanoporous alumina membranes, which play the role as templates to obtain the thin films of antidot arrays [13,34]. The control of the film thickness was achieved by using two independent quartz crystal controllers that monitored simultaneously the deposition rates of each evaporation source.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Influence of nanoholes array geometrical parameters on magnetic properties of Dy–Fe antidot thin films

et al. 2019

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Section: Accepted Manuscriptmentioning

confidence: 99%

Influence of nanoholes array geometrical parameters on magnetic properties of Dy–Fe antidot thin films

et al. 2019

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“…As the large atomic radius of Gd provides a good glassforming ability (GFA) during alloying process, the series of Gd-based bulk metallic glasses (BMGs), amorphous ribbons, and microwires have been developed [10][11][12][13]. Some Gd-and GdCo-based thin films and multilayers fabricated by the sputtering method have also been reported to exhibit good MCE responses [14][15][16].…”

mentioning

confidence: 99%

“…In this work, a melt-extraction method has been employed for fabricating microwires of Gd 60 Co 15 Al 25 , and their magnetic and magnetocaloric properties are systematically investigated. Our study indicates that these microwires are excellent magnetic refrigerants for active magnetic refrigeration in the liquid nitrogen temperature range.…”

mentioning

confidence: 99%

Magnetocaloric effect and critical behavior in melt-extracted Gd₆₀Co₁₅Al₂₅microwires

Xing

Shen

Jiang

et al. 2015

Phys. Status Solidi A

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High-quality Gd 60 Co 15 Al 25 microwires with an average diameter of 40 mm were successfully fabricated by the meltextraction method. The as-cast microwires undergo a secondorder paramagnetic to ferromagnetic (PM-FM) transition at $100 K. Large values of the magnetic entropy change (ÀDS M $9.73 J kg À1 K À1 ) and the refrigerant capacity (RC $732 J kg 1 Introduction Magnetic refrigeration (MR) based on the magnetocaloric effect (MCE) of magnetic refrigerant materials with a first-order magnetic transition (FOMT) or a second-order magnetic transition (SOMT) has attracted growing interest in the scientific community, due to its advantages (e.g., high-cooling efficiency, environmental friendliness, low noise, and compactness) over conventional gas compression-based cooling techniques [1]. Beside Gd, one of the best refrigerant candidates for sub-room temperature magnetic refrigeration [2], a large number of alloys including GdSiGe [3], LaFeSi [4], and MnFePAs [5] exhibiting giant MCEs have been developed for roomtemperature MR, and some of them have also been exploited in low-temperature MR [6]. It has been reported that the larger magnetic enetropy change (DS M ) is observed in a FOMT material but is concentrated in a narrower temperature range, as compared to a SOMT material that shows the smaller magnetic entropy change over a broader temperature range [7]. As a result, the larger refrigerant capacity (RC), which depends both on the magnitude of DS M and on

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“…Hexagonally ordered antidot arrays of Fe 70 Pd 30 alloy thin films formed by highly pure metal pieces of Fe (Goodfellow Limited, Cambridge, UK, 99.9% purity) and Pd (Ventron GMBH, Dortmund, Germany, 99.99% purity) were deposited on the NPAAT substrates by an ultra-high vacuum thermal evaporator (Edwards E306A, Manor Royal, Crawley, West Sussex, UK) at pressures below 10 −7 mbar, as described in [ 25 , 26 , 27 ], with a film thickness in the range of 20 nm ≤ t ≤ 80 nm (in steps of 20 nm). Continuous Fe–Pd alloy thin films (CTFs) were also deposited on a glass substrate at the same time as the antidot samples for comparison.…”

Section: Methodsmentioning

confidence: 99%

Dependence of the Magnetization Process on the Thickness of Fe70Pd30 Nanostructured Thin Film

et al. 2020

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Fe–Pd magnetic shape-memory alloys are of major importance for microsystem applications due to their magnetically driven large reversible strains under moderate stresses. In this context, we focus on the synthesis of nanostructured Fe70Pd30 shape-memory alloy antidot array thin films with different layer thicknesses in the range from 20 nm to 80 nm, deposited onto nanostructured alumina membranes. A significant change in the magnetization process of nanostructured samples was detected by varying the layer thickness. The in-plane coercivity for the antidot array samples increased with decreasing layer thickness, whereas for non-patterned films the coercive field decreased. Anomalous coercivity dependence with temperature was detected for thinner antidot array samples, observing a critical temperature at which the in-plane coercivity behavior changed. A significant reduction in the Curie temperature for antidot samples with thinner layer thicknesses was observed. We attribute these effects to complex magnetization reversal processes and the three-dimensional magnetization profile induced by the nanoholes. These findings could be of major interest in the development of novel magnetic sensors and thermo-magnetic recording patterned media based on template-assisted deposition techniques.

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MOKE study of Co/Ti/(Gd–Co) multilayers near the magnetic compensation state

Cited by 9 publications

References 28 publications

Influence of nanoholes array geometrical parameters on magnetic properties of Dy–Fe antidot thin films

Influence of nanoholes array geometrical parameters on magnetic properties of Dy–Fe antidot thin films

Magnetocaloric effect and critical behavior in melt-extracted Gd₆₀Co₁₅Al₂₅microwires

Dependence of the Magnetization Process on the Thickness of Fe70Pd30 Nanostructured Thin Film

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MOKE study of Co/Ti/(Gd–Co) multilayers near the magnetic compensation state

Cited by 9 publications

References 28 publications

Influence of nanoholes array geometrical parameters on magnetic properties of Dy–Fe antidot thin films

Influence of nanoholes array geometrical parameters on magnetic properties of Dy–Fe antidot thin films

Magnetocaloric effect and critical behavior in melt-extracted Gd60Co15Al25microwires

Dependence of the Magnetization Process on the Thickness of Fe70Pd30 Nanostructured Thin Film

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Magnetocaloric effect and critical behavior in melt-extracted Gd₆₀Co₁₅Al₂₅microwires