TY - JOUR
T1 - Resonant fluorescence emission of Mn Kβ in quasicrystals
AU - Watanabe, Yasuhiro
AU - Okada, Junpei Tamura
AU - Shoji, Hironobu
AU - Nanao, Susumu
N1 - Funding Information:
The authors are grateful to Dr Iwazumi for his technical support for all the synchrotron experiments and to Prof. Isozumi and Dr Katano for supporting the PSPC detector. They also thank Dr Yokoyama for providing the samples of the d-AlMnFeGe and i-AlPdMnB. REX spectra were measured under approval of the Photon Facility Program Advisory Committee (Proposal No. 99G164). This work is supported in part by a Grant-in-Aid from the Ministry of Education, Science Sport and Culture, Japan. It is also supported in part by a Grant-in-Aid from the Light Metal Educational Foundation.
PY - 2002/8/14
Y1 - 2002/8/14
N2 - Resonant X-ray emission spectra of Mn Kβ1,3 (3p · 1s) were measured near the Mn K absorption edge for quasicrystalline icosahedral Al-Pd-Mn, icosahedral Al-Pd-Mn-B, icosahedral Al-Mn-Si, decagonal Al-Mn-Fe-Ge and crystalline α-Al-Mn-Si. Except for the Raman scattering energy region, the peak energy of Kβ1,3 is independent of incident photon energy for all the samples. The shape was also unchanged. A Kβ' subpeak, which is caused by the splitting between the density of states of the high spin and the low spin in the 3p band, appeared in all the quasicrystal samples with lower intensity than those of the Mn oxides in spite of the fact that Mn atoms in the decagonal Al-Mn-Fe-Ge and the icosahedral Al-Pd-Mn-B are in a ferromagnetic state. In the profile of the icosahedral Al-Pd-Mn, α-Al-Mn-Si and decagonal Al-Mn-Fe-Ge, a clear hump was observed at the energy between Kβ1,3 and Kβ'. In the emission spectra of Mn Kβ5 (3d → 1s), peak positions were 1.5 eV lower for the ferromagnetic quasicrystals than those of the other quasicrystals.
AB - Resonant X-ray emission spectra of Mn Kβ1,3 (3p · 1s) were measured near the Mn K absorption edge for quasicrystalline icosahedral Al-Pd-Mn, icosahedral Al-Pd-Mn-B, icosahedral Al-Mn-Si, decagonal Al-Mn-Fe-Ge and crystalline α-Al-Mn-Si. Except for the Raman scattering energy region, the peak energy of Kβ1,3 is independent of incident photon energy for all the samples. The shape was also unchanged. A Kβ' subpeak, which is caused by the splitting between the density of states of the high spin and the low spin in the 3p band, appeared in all the quasicrystal samples with lower intensity than those of the Mn oxides in spite of the fact that Mn atoms in the decagonal Al-Mn-Fe-Ge and the icosahedral Al-Pd-Mn-B are in a ferromagnetic state. In the profile of the icosahedral Al-Pd-Mn, α-Al-Mn-Si and decagonal Al-Mn-Fe-Ge, a clear hump was observed at the energy between Kβ1,3 and Kβ'. In the emission spectra of Mn Kβ5 (3d → 1s), peak positions were 1.5 eV lower for the ferromagnetic quasicrystals than those of the other quasicrystals.
KW - Al-Mn-Fe-Ge
KW - Al-Mn-Si
KW - Al-Pd-Mn
KW - Quasicrystal
KW - Resonant X-ray emission spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=0037077642&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037077642&partnerID=8YFLogxK
U2 - 10.1016/S0925-8388(02)00853-8
DO - 10.1016/S0925-8388(02)00853-8
M3 - Conference article
AN - SCOPUS:0037077642
SN - 0925-8388
VL - 342
SP - 422
EP - 426
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1-2
T2 - QC2001
Y2 - 24 September 2001 through 28 September 2001
ER -