نتایج جستجو برای: dichroism

تعداد نتایج: 9354  

2010
Sebastian Brück Sebastian Macke Eberhard Goering Xiaosong Ji Qingfeng Zhan Kannan M. Krishnan

A bilayer exchange-bias system composed of Fe/MnPd is investigated using x-ray magnetic circular dichroism XMCD and soft x-ray resonant magnetic reflectometry XRMR . The absorption and XMCD data at the Fe L and Mn L edges are used to derive the optical and magneto-optical properties of the individual layers. Then the structural and magnetic depth profiles of the sample are obtained from XRMR. F...

1998
J. P. Rueff R. M. Galéra M. Alouani

The X-ray magnetic circular dichroism (XMCD) has been measured at the Co K edge in hcp-Co and R-Co compounds (R=La, Tb, Dy). The structure of the experimental XMCD spectra in the near-edge region has been observed to be highly sensitive to the magnetic environment of the absorbing site. Calculations of the XMCD have been carried out at the Co K edge in Co metal, LaCo 5 and TbCo 5 within the mul...

2004
S. Qiao A. Kimura H. Adachi K. Iori K. Miyamoto T. Xie H. Namatame M. Taniguchi A. Tanaka T. Muro S. Imada S. Suga

S. Qiao,1,* A. Kimura,2,† H. Adachi,3 K. Iori,2 K. Miyamoto,2 T. Xie,2 H. Namatame,1 M. Taniguchi,1,2 A. Tanaka,4 T. Muro,5 S. Imada,6 and S. Suga6 1Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan 2Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan 3Institute of Materials Structure Science, KE...

Journal: :Dalton transactions 2016
J Rozbořil Y Rechkemmer D Bloos F Münz C N Wang P Neugebauer J Čechal J Novák J van Slageren

We report field-dependent magnetization measurements on monolayers of [Dy(Pc)2] on quartz, prepared by the Langmuir-Blodgett technique. The films are thoroughly characterized by means of X-ray reflectivity and atomic force microscopy. The magnetisation of the sample is measured through the magnetic circular dichroism of a ligand-based electronic transition.

Journal: :Physical review. B, Condensed matter 1996
Mainkar Browne Callaway

We report a first principles, self-consistent, all electron, linear combination of Gaussian orbitals (LCGO) calculation of a comprehensive collection of magneto-optical properties of nickel and iron based on density functional theory. Among the many magneto-optical effects, we have studied the equatorial Kerr effect for absorption in the optical as well as soft X-ray region, where it is called ...

2016
R. Harju R. Laiho

— The temperature dependence of the optical absorption bands and of the magnetic circular dichroism are measured for the Au" centre in KBr and RbCl. The data are analyzed with the method of moments by using six electron-lattice interaction coefficients to describe the coupling of the | 1 r l u > and | Tlu > excited states with the AXg, Eg and T2g lattice modes. The centre is found to be coupled...

1999
B. Beschoten P. A. Crowell I. Malajovich D. D. Awschalom H. Ohno

Magnetic circular dichroism is used to investigate the evolution of ferromagnetism in the p-type magnetic semiconductor Ga12xMnx As. Local Mn moments and holes produce two spectroscopically distinct contributions, whose properties reveal an antiferromagnetic Mn-hole alignment in the ferromagnetic state. These components are present in both metallic and insulating samples with different temperat...

2006
E. Castro - Camus J. Lloyd - Hughes M. D. Fraser H. H. Tan C. Jagadish M. B. Johnston

We have developed a detector which records the full polarisation state of a terahertz (THz) pulse propagating in free space. The three-electrode photoconductive receiver simultaneously records the electric field of an electromagnetic pulse in two orthogonal directions as a function of time. A prototype device fabricated on Fe + ion implanted InP exhibited a cross polarised extinction ratio bett...

2016
Seong-Hwan Kim Yoonho Shin Sang Kook Lee Jongheon Shin Dong-Chan Oh

− Comprehensive chemical analysis of extracts and fractions of marine actinomycete strains led to the discovery of a new minor secondary metabolite, salternamide E (1), from a saltern-derived halophilic Streptomyces strain. The planar structure of salternamide E (1) was elucidated by a combinational analysis of spectroscopic data including NMR, MS, UV, and IR. The absolute configuration of salt...

2013
Benjamin Woollett Lee Whitmore Robert W. Janes B. A. Wallace

Circular dichroism (CD) spectroscopy is widely used in structural biology as a technique for examining the structure, folding and conformational changes of proteins. A new server, ValiDichro, has been developed for checking the quality and validity of CD spectral data and metadata, both as an aid to data collection and processing and as a validation procedure for spectra to be included in publi...

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