Fundamental studies and application of short-wavelength magneto-optical effect in Pt-based multilayers

Sato, K.; Ikekame, H.; Tosaka, Yasuhiro; Tsuzukiyama, K.; Togami, Yuji; Fujisawa, Masami

doi:10.1016/0304-8853(93)90690-4

Cited by 26 publications

(4 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The polar Kerr rotation shows an increase towards higher energy and the peak for Co/Pt occurs at an energy close to 4.3 eV. This increase in the Kerr rotation in MLs has been discussed before by several authors [8,9]. This is generally attributed to the effect of Pt neighbours on Co atoms.…”

Section: Resultssupporting

confidence: 72%

“…However, as regards the MO effects, a different picture is obtained. The polar Kerr effect spectra of Co/Pt have been widely studied by several authors, including ourselves [8][9][10]. It is observed that the Kerr rotation shows a broad peak centred near 4.3 eV which is absent in bulk Co. As a result, the magnitude of the Kerr rotation above 3.7 eV exceeds that in Co.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Difference in the behaviour of interfacial Co and Ni atoms in Co_xNi_1-x/Pt multilayers: an explanation

Seddat

Tessier

Krishnan

et al. 2000

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Magnetization at 5 K and polar Kerr spectra in CoxNi1-x/Pt multilayers were studied as functions of Co content in order to better understand the difference in the behaviour of interfacial Co and Ni atoms. While the magneto-optic enhancement in the Kerr spectra is observed for the whole range of 00.3 indicating that Pt atoms are not polarized by the Ni atoms. The x-ray photoelectron spectroscopy experiments indicate that there is charge transfer from Pt to 3d bands of Ni at the interface, leading to the loss of ferromagnetism in Ni. Therefore, non-magnetic Ni is not able to polarize Pt and induce a moment. In contrast, in the case of Co, no charge transfer is seen and Co remains ferromagnetic and induces a moment on Pt by polarization effects.

show abstract

Section: Resultssupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Difference in the behaviour of interfacial Co and Ni atoms in Co_xNi_1-x/Pt multilayers: an explanation

Seddat

Tessier

Krishnan

et al. 2000

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…0953-8984/97/020447+14$19.50 c 1997 IOP Publishing Ltd their transition energies of up to ∼6 eV, magneto-optical (MO) techniques in general probe a convolution of initial and final states within the valence band of a material. Numerous spectroscopic MOKE discoveries, including the strong resonance effect due to the reduced optical constants in Fe, Co/noble-metal structures [16][17][18][19][20][21], MOKE enhancement in the uv region in Fe, Co/Pt multilayers [22][23][24][25], and quantum confinement effects in ultrathin Fe film [26] have been established.…”

Section: Introductionmentioning

confidence: 99%

Experimental andab initiotheoretical study of optical and magneto-optical properties of Co/Cu multilayers

Uba

Perlov

et al. 1997

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The polar Kerr rotation and ellipticity spectra were measured in the spectral range 0.8 - 5.5 eV for a set of Co/Cu multilayered structures (MLS). The magneto-optical (MO) response of Co/Cu MLS being related to the -part of the optical conductivity tensor was obtained from the Kerr spectra and tensor component , determined by spectroscopic ellipsometry. The self-consistent spin-polarized fully relativistic linear muffin-tin orbital method within the local spin-density approximation was used to calculate the electronic structure, optical, and MO properties of some model Co/Cu MLS. Good agreement between the measured and calculated optical and MO spectra is observed. The role of the spin - orbit coupling and exchange splitting at the Co and Cu sites, and the hybridization effects are examined and discussed. The spin-polarized Cu interface states appear to give a weak contribution to the - and Kerr spectra whereas the latter ones are strongly influenced by the Cu-dominated optical spectra structure. The results obtained demonstrate that the MO properties of real large-period multilayered structures can be quantitatively predicted from first-principles band-structure calculations.

show abstract

“…[1][2][3]). In particular, multi-layers of Co and Pt or Pd are at present intensively studied because of their potential application as optical storage material in MO storage devices [4][5][6]. In addition to this, it has very recently been discovered that the compound MnPt 3 exhibits a very large MO Kerr rotation, of about −1.2 • at 1 eV photon energy [7,8].…”

Section: Introductionmentioning

confidence: 99%

Calculated magneto-optical Kerr spectra of compounds (X = V, Cr, Mn, Fe and Co)

Oppeneer¹,

Antonov

Kraft³

et al. 1996

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The magneto-optical spectra of the compounds (with X = V, Cr, Mn, Fe and Co) are calculated for their ferromagnetic phase in the crystal structure, using density-functional band-structure theory. Large polar Kerr effects are predicted for several of these compounds, with - for a reasonable spectral broadening of 0.4 eV - maximum Kerr rotations of for and , for and , respectively. The Kerr spectra of , and with (001) magnetization are found to be very similar in shape, as are also those of and . The origin of the large Kerr effect in the alloys is shown to be caused by the spin - orbit coupling strength of Pt. A magnetic moment of moderate size on the 3d atom suffices in these materials to already create an appreciable Kerr effect. The influence of the optical transition matrix elements, magnetic moments and spin - orbit coupling strength on each of the constituent atoms are furthermore analysed. The orientation dependence of the polar Kerr spectra of some of the compounds are investigated by calculating in addition the polar Kerr spectra of some compounds for the (111) magnetization axis. The Kerr spectra of the (111) magnetization are found to be practically identical to that of the (001) magnetization.

show abstract

Fundamental studies and application of short-wavelength magneto-optical effect in Pt-based multilayers

Cited by 26 publications

References 16 publications

Difference in the behaviour of interfacial Co and Ni atoms in Co_xNi_1-x/Pt multilayers: an explanation

Difference in the behaviour of interfacial Co and Ni atoms in Co_xNi_1-x/Pt multilayers: an explanation

Experimental andab initiotheoretical study of optical and magneto-optical properties of Co/Cu multilayers

Calculated magneto-optical Kerr spectra of compounds (X = V, Cr, Mn, Fe and Co)

Contact Info

Product

Resources

About

Fundamental studies and application of short-wavelength magneto-optical effect in Pt-based multilayers

Cited by 26 publications

References 16 publications

Difference in the behaviour of interfacial Co and Ni atoms in CoxNi1-x/Pt multilayers: an explanation

Difference in the behaviour of interfacial Co and Ni atoms in CoxNi1-x/Pt multilayers: an explanation

Experimental andab initiotheoretical study of optical and magneto-optical properties of Co/Cu multilayers

Calculated magneto-optical Kerr spectra of compounds (X = V, Cr, Mn, Fe and Co)

Contact Info

Product

Resources

About

Difference in the behaviour of interfacial Co and Ni atoms in Co_xNi_1-x/Pt multilayers: an explanation

Difference in the behaviour of interfacial Co and Ni atoms in Co_xNi_1-x/Pt multilayers: an explanation