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Soft X-ray absorption spectroscopy (SXAS) beamline (BL-1) [an error occurred while processing this directive]

Polarized light soft X-ray absorption spectroscopy beamline (BL-01)

X-ray absorption spectroscopy in the soft X-ray energy range is a powerful technique and can be employed in variety of fields of basic sciences. This is an element selective (occurs at specific absorption edges of the elements), give information on chemical species (characteristic spectral features (π*, σ*…)), probes information about anisotropy (molecular orientation, lattice anisotropy: using linearly polarized X-rays), and probes magnetic materials (using circularly polarized X-rays).

Polarized light soft X-ray absorption spectroscopy beamline (BL-01) located at the bending magnet source of Indus-2 synchrotron source operates in the energy range of 100-1200 eV and caters the need of variety of X-ray absorption measurements. Energy range at BL-01 covers numerous important absorption edges of several elements such as K edges of light elements (C, B, N, O…), L edges of 3d transition metals Cr, Mn…, M edges of 4d transition metals Mo, Ru ….., N edges of 5d transition metals, Re, Os, Ir ….. and M & N edges of rare earths (4f metals), Eu, Gd, Tb etc.

Beamline layout:

Schematic diagram of polarized light soft x-ray absorption spectroscopy beamline BL01 at Indus-2.
Schematic diagram of polarized light soft x-ray absorption spectroscopy beamline BL01 at Indus-2.

Beamline parameters:

Source

Bending magnet source

Acceptance

4.5 mrad (H) x 1.5 mrad (V)

Beam size (at sample position)

~ 500 µm x 500 µm

Energy range

100 eV – 1200 eV

Polarization selection

Water cooled moveable polarization selection aperture of 200 m width

Monochromator

Spherical grating monochromator (three interchangeable gratings).

Experiments*

X-ray absorption spectroscopy (XAS); X-ray magnetic circular dichroism (XMCD); X-ray magnetic linear dichroism (XMLD)

* At the moment only X-ray absorption spectroscopy (XAS) experiments are possible.

Recent results:


Fig. X-ray absorption spectrum of a HOPG carbon foil in TEY

Fig. XAS spectra of Ti L3,2-edge of NTO pristine and swift heavy ion (SHI) irradiated films; a case of phase transformation. [S. K. Gautam et al., Phys. Chem. Chem. Phys., 18, 3618-3627 (2016).]

Fig. (a) Fe L3,2 edges and (b) O K-edges XAS for iron oxide nanoparticles prepared in an argon atmosphere, and under vacuum conditions along with reference compound. [Sarveena et al., Phys. Chem. Chem. Phys., 18, 9561 (2016).]

Fig. XAS spectra across O K edge and Ni L3,2 edge of a thin NiO layer on sapphire. [S. D. Singh et al., J. Appl. Phys. 119 165302 (2016).]

Recent Publications:

  1. “Metastable magnetic state and magnetotransport in disordered manganite thin films” Manish Kumar, R. J. Choudhary, D. K. Shukla, and D. M. Phase, J. Appl. Phys. 115, 163904 (2014).
  2. “Structural, Optical and Electronic Structure studies of Al Doped ZnO Thin Films” Vanita Devi, Manish Kumar, D. K. Shukla, R. J. Choudhary, D. M. Phase, R. Kumar, B. C. Joshi, Superlattices and microstructures 83, 431 (2015).
  3. “X-ray absorption spectroscopy of Mn doped ZnO thin films prepared by rf sputtering technique” Ashok Kumar Yadav, Sk Maidul Haque, Dinesh Shukla, Ram Janay Choudhary, SN Jha, D Bhattacharyya, AIP Advances 5 (11), 117138 (2015).
  4. “Anomalous behavior of B1g mode in highly transparent anatase nano-crystalline Nb-doped Titanium Dioxide (NTO) thin films” Subodh K Gautam, Naina Gautam, RG Singh, S Ojha, DK Shukla, Fouran Singh, AIP Advances 5 (12), 127212 (2015). (2016)
  5. “Resonant photoemission study of multiferroic LuFe2O4 across three-dimensional to two-dimensional charge ordering” S. Patankar, R. J. Choudhary and D. M. Phase, Appl. Phys. Lett. 106, 172905 (2015).
  6. “Study of magnetic iron nitride thin films deposited by high power impulse magnetron sputtering” Akhil Tayala & Mukul Gupta et al., Surface and Coatings Technology 275, 264 (2015).
  7. “Electronic structure modification and Fermi level shifting in niobium-doped anatase titanium dioxide thin films: a comparative study of NEXAFS, work function and stiffening of phonons” Subodh K Gautam, Arkaprava Das, S Ojha, D K Shukla, DM Phase, Fouran Singh, Phys. Chem. Chem. Phys., 18, 3618-3627 (2016).
  8. “Synthesis, phase composition, Mössbauer and magnetic characterization of iron oxide nanoparticles” Sarveena, J. M. Vargas, D. K. Shukla, C. T. Meneses, P. Mendoza Zélis, M. Singh and S. K. Sharma, Phys. Chem. Chem. Phys., 18, 9561 (2016).
  9. “Structural, electronic structure, and band alignment properties at epitaxial NiO/Al2O3 heterojunction evaluated from synchrotron based X-ray techniques” SD Singh, Mangla Nand, Arijeet Das, RS Ajimsha, Anuj Upadhyay, Rajiv Kamparath, DK Shukla, C Mukherjee, P Misra, SK Rai, AK Sinha, SN Jha, DM Phase, Tapas Ganguli, J. Appl. Phys. 119 165302 (2016).

Contact Number : 244 2501

Contact Persons:

D. M. Phase

dmphase(a)csr.res.in

M. Gupta

mgupta(a)csr.res.in

D. K. Shukla

dkshukla(a)csr.res.in


Last Modification on: May 2016