MAGNETOOPTICAL SPECTRA OF MnSb CRYSTAL BETWEEN 1.2 AND 6.4 eV

Abstract

Abstract-Magnetooptical spectra have been studied for photon energies between 1.2 and 6.4 eV in bulk crystals ofundoped and Pt-doped MnSb. Kerr rotation ofundoped crystals showed a prominent zero-crossing behavior around 4.5 eV. The zerocrossing energy moved to 4.1 eV in Pt-doped samples, which were explained by the averaged spectra of separated two phases. ofMnSb and PtMnSb.

MAGNETO-OPTICAL SPECTRA OF MnPt3 AND Mn1-xFexPt3 ALLOY FILMS

“…Recently, Oppeneer et al demonstrated by first principle calculation that the spin-orbit-coupling strength on Pt plays an important role in the large magneto-optical effect of MnPt3 [15]. The calculated spectrum of MnPt3' which shows a large negative peak at 0.9 eV, approximately agree with the experimental spectrum substrate side ,md other magneto-optical materials containing Mn; PtMnSb (Clb type) [2], MnBi [5], MnSb [13] and PtMnSb (NiAs type) [12], where the referred data measured from a material surface are multiplied by the reflective index nO(A) of fused quartz in order to compare with the data measured from a substrate side. In the next place, the variation of the Kerr spectra of the MnPt3 alloy was investigated by substituting Fe for a part of Mn.…”

Optical and Magnetooptical Spectroscopy of the Nanostructural Multilayered Films: Possible Applications

“…However, unlike MO properties, the optical properties of the Co/Pt and Fe/Au MLF are noticeably less investigated-only several publications related to Co/Pt and Fe/Au MLF can be mentioned [5,13,15]. At the same time, another possible explanation of such unusual MO properties of the Fe/Au layered structures was also suggested by Suzuki et al: a new MO absorption appears due to formation of quantum well states in very thin Fe sublayers [16].…”

“…The experimentally observed unusual MO response is attributed to the direct orbital hybridization between Pt(Au) and Co(Fe) atoms: the spin magnetization of the magnetic Fe(Co) atoms is transferred to the nonmagnetic Pt(Au) atoms and the stronger spin-orbit coupling of the heavy Pt(Au) atoms is transmitted to the Fe(Co) atoms [14]. However, in spite of a huge number of publications and of some attempts to determine the MO properties of the 'magnetic' Pt, for example, undertaken by Sato and co-workers by analyzing the MO spectra of Fe x Pt 1 − x alloys [15], the MO properties of the 'pure' spinpolarized Pt and Au sublayers have not been yet confirmed.…”