Magnetic properties of Ni/Pt multilayers

Krishnan, R.; Lassri, H.; Prasad, Shiva; Porte, M.; Tessier, M.

doi:10.1063/1.352623

Cited by 51 publications

(25 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In 1990, Hashimoto and Ochiai 1 reported on perpendicularly magnetized Ni/Pt multilayers with rectangular hysteresis loops. A number of works later studied in detail the magnetic anisotropy features of such samples in a phenomenological [2][3][4][5][6][7] and microscopic 8 approach. These works suggested that the easy-magnetization axis is along the film normal not only for very thin Ni layers, but also for thicker ones when they are combined with very thin Pt layers.…”

Section: Introductionmentioning

confidence: 99%

“…5,9 Conflicting results, however, have been published on the magnetization of Ni/Pt multilayers. Studies with classic magnetometry techniques, like superconducting quantum interference device ͑SQUID͒ or vibrating-sample magnetometer ͑VSM͒, reported slightly enhanced, 4 to slightly reduced, 3 or even strongly reduced 6,7 magnetizations for Ni/Pt multilayers. This has been attributed to a possible induced Pt magnetic moment aligned parallel to the Ni one, 4 or to a number of ''dead'' Ni-layers due to the proximity of Pt at the Ni/Pt interface.…”

Section: Introductionmentioning

confidence: 99%

“…This has been attributed to a possible induced Pt magnetic moment aligned parallel to the Ni one, 4 or to a number of ''dead'' Ni-layers due to the proximity of Pt at the Ni/Pt interface. 3,6 To clarify the problem it is evident that we need techniques with element specificity, i.e., ones offering the possibility to measure both the Ni and Pt magnetic moments separately. In this work we apply the x-ray magnetic circular dichroism ͑XMCD͒ technique 10,11 on Ni/Pt multilayers.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

X-ray magnetic circular dichroic magnetometry on Ni/Pt multilayers

Poulopoulos

Wilhelm

Wende

et al. 2001

Journal of Applied Physics

View full text Add to dashboard Cite

Articles you may be interested inElectronic structure of Fe/MgO/Fe multilayer stack by X-ray magnetic circular dichroism J. Appl. Phys. 115, 17C109 (2014); 10.1063/1.4862380 X-ray absorption and magnetic circular dichroism of graphene/Ni (111) Application of the x-ray magnetic circular dichroism sum rules to Co/Pt multilayers (abstract) X-ray magnetic circular dichroism measurements have been performed on Ni/Pt multilayers at a temperature of 10 K. The element specificity and shell selectivity of the technique allows us to probe Ni and Pt magnetic moments and to separate them into their constituent spin ( S ) and orbital ( L ) magnetic moments. The Ni magnetic moment at the interface is found to be reduced. However, magnetically ''dead'' Ni layers are unambiguously ruled out. Induced Pt magnetic moments up to about 0.3 B /atom are reported. The results are compared to ab initio calculations and to previous experiments performed on NiPt alloys. The role of intermixing in the reduction of the Ni magnetic moments is also discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

X-ray magnetic circular dichroic magnetometry on Ni/Pt multilayers

Poulopoulos

Wilhelm

Wende

et al. 2001

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…2(b) is the first observation in Ni/ Pt system as we know. Krishnan et al 16 have reported that the magnetization of thermal-evaporation-grown Ni/ Pt multilayers was perpendicular when 0.6 nmഛ t Ni ഛ 1.7 nm, and it was in the film plane when t Ni Ͼ 2 nm. Angelakeris et al 17 have found the perpendicular anisotropy of e-beam-grown Ni/ Pt multilayers developed for thick Ni layers with extremely thin Pt layers.…”

Section: Resultsmentioning

confidence: 99%

Structure and magnetic properties of ultrathin Ni films on Pt(111) with Co buffer layers

Shern

Lin

et al. 2004

Phys. Rev. B

View full text Add to dashboard Cite

The growth mode and the structure of ultrathin Ni films on Pt(111) with Co buffer layers were studied by low-energy electron diffraction (LEED) and Auger electron spectroscopy. The comparative study of the magnetic properties between Ni/ Pt͑111͒ and Ni/1 ML Co/ Pt͑111͒ was investigated by magneto-optical Kerr effect. The oscillation of the specular beam of LEED and the Auger uptake curve were used to calibrate the thickness of Ni overlayers and to study the growth mode of Ni thin films on 1 ML Co/ Pt͑111͒. The study of the alloy formation for Ni/1 ML Co/ Pt͑111͒ showed that the temperature for mixing Ni and Co in the upper interface without diffusing into the bulk of Pt is independent of the thickness of Ni overlayers. By further increasing the temperature, Co and Ni diffuse into Pt bulk simultaneously to form Co-Pt, Ni-Pt, and Ni-Co-Pt alloys. The temperature of the formation of these alloys is dependent on the Ni thickness. Studies of the magnetic properties showed that the easy axis of the magnetization changed from the cant to the out-of-plane direction when the Co buffer layer was inserted on Ni/ Pt͑111͒. The alloy formation causes some interesting changes in the polar Kerr signal. The enhancement in the out-of-plane magnetization of Ni/ Co/ Pt͑111͒ is mainly contributed by the formation of Co-Pt alloy.

show abstract

“…It is shown that the thermal decrease of the spontaneous magnetization of ferromagnetic transition metal differs characteristically depending on preparation conditions [2][3][4][5][6]. In all cases, the deviations from saturation at absolute zero can be accurately described by a single temperature power, temperature power term T n , which holds up to several hundreds of kelvins.…”

Section: Introductionmentioning

confidence: 96%