The magneto-optical Kerr effect of bilayers Fe/Au-Cu and Fe/Ag-Au

Zhai, Hongru; Zhou, Shiming; Lu, Ming‐Hui; Miao, Y.Z.; Tian, Peng; Wang, H.; Xu, Yingqi; Huang, H.

doi:10.1063/1.351256

Cited by 5 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The shape of the Late Mesozoic magmatic rocks is constrained by a series of NE-trending faults and folds. Numerous polymetallic Cu-Au deposits are products of those intermediate-felsic magmatic and relevant hydrothermal activities (Figure 1b) [49]. Ore-bearing intrusions include the DGS, Tongguanshan, Fenghuangshan, Xinqiao, and Shizishan, which mainly consist of intermediate-felsic magmatic rocks, including pyroxene monzodiorite, quartz monzodiorite, and granodiorite [15,50].…”

Section: Geological Backgroundmentioning

confidence: 99%

“…The DGS quartz monzodiorites have high SiO 2 and Al 2 O 3 contents varying from 63.2 to 67.9 wt% and 14.9 to 16.2 wt%, respectively. They have high Sr (800-991 ppm), low Y (15.2-17.5 ppm) and Yb (1.37-1.52 ppm) concentrations, and resultant high Sr/Y (46)(47)(48)(49)(50)(51)(52)(53)(54)(55)(56)(57)(58)(59)(60)(61) and (La/Yb) N (14.8-18.5) ratios, which are all typical geochemical features of adakites [78]. In the discrimination diagrams (Figure 9), most of the samples fall in or on the boundary of the adakite field.…”

Section: Petrogenesis Of the Dgs Quartz Monzodioritementioning

confidence: 99%

See 1 more Smart Citation

Geochronology and Geochemistry of Cretaceous Adakitic Rocks of the Dongguashan Cu Deposit in the Lower Yangtze River Belt: Insights into Petrogenesis and Mineralization

et al. 2023

View full text Add to dashboard Cite

The Lower Yangtze River Belt (LYRB) is a well-known and important base area with regard to Cu polymetallic resources in China. Large Cu polymetallic deposits in the LYRB are strongly associated with Cretaceous adakitic rocks. However, the petrogenesis of the Early Cretaceous adakites and the temporal–genetic relationship with mineralization are still disputable. The Dongguashan (DGS) Cu polymetallic deposit in the Tongling ore cluster is one of the largest Cu deposits in the LYRB. The DGS intrusion mainly comprises quartz monzodiorite, with SiO2 contents varying from 63.7 to 67.9 wt%. Zircons from the quartz monzonite yield a SIMS U-Pb age of 138.9 ± 1.8 Ma, which indicates that the Cretaceous magmatism is coeval with mineralization. The studied rocks show typical geochemical signatures of adakites, characterized by high Al2O3 (14.9–16.2 wt%) and Sr (800–910 ppm) and low Y (15.2–17.5 ppm) and Yb (1.37–1.52 ppm) contents, with consequently high Sr/Y (46–61) and (La/Yb)N (14.8–18.5) ratios. The zircon δ18O values of the DGS adakites range from 5.7‰ to 7.3‰, indicating a heterogeneous source. Whole-rock Sr-Nd isotopic compositions show an enriched character, with ISr ratios from 0.70783 to 0.70794 and εNd(t) values around −11.0, which fall intermediately in the area of MORB (mid-ocean ridge basalt), marine sediment, and the ancient lower crust. Comprehensively, whole-rock geochemical compositions and isotopic values suggest that the adakites are generated from the partial melting of the subducted oceanic crust and possibly with the involvement of sedimentary materials derived from the slab or continental crust. Moreover, the bulk-rock high-Cu composition, and the physical–chemical conditions (high oxygen fugacity and high volatile contents) revealed by apatites, plays critical roles in the formation of Cu mineralization in the DGS Tongling ore cluster, LYRB.

show abstract

Section: Geological Backgroundmentioning

confidence: 99%

Section: Petrogenesis Of the Dgs Quartz Monzodioritementioning

confidence: 99%

Geochronology and Geochemistry of Cretaceous Adakitic Rocks of the Dongguashan Cu Deposit in the Lower Yangtze River Belt: Insights into Petrogenesis and Mineralization

et al. 2023

View full text Add to dashboard Cite

show abstract

Magneto-optical characteristics of SiN/GdFe films

Shen

Wang

et al. 2001

Journal of Applied Physics

View full text Add to dashboard Cite

The magneto-optical and optical properties of GdFe single layer films, which are covered with a thin Si3N4 layer, were studied in the visible wavelength region. A Kerr rotation peak and a reflectivity drop were observed near 4.1 eV in GdFe alloyed films and attributed to the Gd element. Compared with the single thick GdFe film, the Kerr effect of SiN/GdFe bilayers was enhanced, due to the optical interference between Si3N4 and GdFe. The Kerr rotation of GdFe films showed a nonlinear function of the compositions in the whole measured wavelength range. Magneto-optical measurements directly evidence the spin–flip in the GdFe films as the Gd content increased from 20.7 to 24.2 at. %, which showed advantages over conventional magnetometry.

show abstract

The magneto-optical Kerr effect of trilayer

Zhou

Zhang

et al. 1992

Journal of Applied Physics

View full text Add to dashboard Cite

In this paper the magneto-optical polar Kerr rotation spectra of trilayers Fe/Ag/Cu, Fe/Cu/Ag, Fe/Au/Cu, and Fe/Cu/Au were measured and calculated. The experimental results coincided well with the calculated results. It was found that for trilayers Fe/Cu/Ag and Fe/Ag/Cu, with a 100 Å thickness of the top Fe layer, there were two Kerr rotation peaks in their rotational magneto-optical Kerr rotation spectra, located near 320 nm (the plasma edge of Ag) and 560 nm (the absorption edge of Cu). For Fe/Cu/Au and Fe/Au/Cu, with a 100 Å thickness of the top Fe layer, there was only one Kerr rotation peak, which shifts slightly with the intermediate layer thickness. Trilayers Fe/Au/Cu and Fe/Cu/Au with suitable thickness of the top Fe layer are useful at present for magneto-optical storage with a read-out laser of long wavelength; Fe/Ag/Au and Fe/Cu/Ag will be useful in the future for magneto-optical storage with read-out laser of short wavelength.

show abstract

The magneto-optical Kerr effect of bilayers Fe/Au-Cu and Fe/Ag-Au

Cited by 5 publications

References 11 publications

Geochronology and Geochemistry of Cretaceous Adakitic Rocks of the Dongguashan Cu Deposit in the Lower Yangtze River Belt: Insights into Petrogenesis and Mineralization

Geochronology and Geochemistry of Cretaceous Adakitic Rocks of the Dongguashan Cu Deposit in the Lower Yangtze River Belt: Insights into Petrogenesis and Mineralization

Magneto-optical characteristics of SiN/GdFe films

The magneto-optical Kerr effect of trilayer

Contact Info

Product

Resources

About