TY - JOUR
T1 - μSr study of 1:1 complex of bis(hexafluoroacetylacetonate) manganese(II) with diazodi(4-pyridyl)methan as a photo-responsible magnetic coupler
AU - Ajiro, Y.
AU - Asano, T.
AU - Inagaki, Y.
AU - Karasawa, S.
AU - Koga, N.
AU - Nishiyama, K.
AU - Miyake, Y.
AU - Nagamine, K.
N1 - Funding Information:
While we are not successful in detecting definite meaningful effects of irradiation at the present stage, we are now proceeding the experiment after overcoming difficulties mentioned above. Here, we discuss potential usability of pSR technique to reveal the expected unconventional feature of the photo-induced magnetic order. As mentioned above, the complex is nothing but paramagnetic due to the magnetically isolated Mn(I1) ions before irradiarion. Upon irradiation, metal ions are coupled magnetically via the photo-generated triplet radical centers in carben molecules. It goes without saying that the generated radicals are located randomly in the system. Therefore, the system becomes to be highly magnetically imhomogeneous after irradiation. In this sense, we expect unconventional feature of the photo-induced magnetic order. The anticipated magnetic order should be strongly imhomogeneous and spatially modulated, if any, including a possible coexistence of disordered and ordered regions. For such a magnetically imhomogeneous system, pSR technique provides a powerful and unique method to probe the static and dynamic magnetic behaviors from a microscopic point of view. As demonstrated in some imhomogeneous systems [6], a time spectra may show an exceedingly different relaxation shape due to a spatially non-uniform wide distribution of the local internal fields in comparison with normal Gaussian and exponential damping. The method should be applicable to other interesting examples closely related with new molecular magnetism under laser-photon irradiation. Representatives are concerned with "Photoinduced magnetization of a Cobalt-Iron cyanide" and "Photocontrol of magnetic hysteresis in charge-transfer complex, MnTPPTCNE". [7-81 Acknowledgments We thank staff of Meson Science Laboratory at -ical support. This work was partially supported by a Grant-in-Aid for Scientific Research on Priority Area from Ministry of Education, Science, Sports and Culture.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2000
Y1 - 2000
N2 - We apply muon spin relaxation (μSR) technique to study the magnetic behaviors of the photosensitive molecular magnet, 1:1 complexes of bis(hexafluoroacetylacetonate) manganese(II), {Mn(hfac)2} with diazodi(4-pyridyl)methane as a photoresponsible magnetic coupler. The μSR time spectra have been collected before and after laser irradiation as a function of temperature from 290 K to 10 K and as a function of irradiation time during 30 hours. While we are not successful in detecting meaningful effects of irradiation at the present stage, we discuss potential usability of μSR technique to reveal the expected unconventional feature of the photo-induced magnetic order.
AB - We apply muon spin relaxation (μSR) technique to study the magnetic behaviors of the photosensitive molecular magnet, 1:1 complexes of bis(hexafluoroacetylacetonate) manganese(II), {Mn(hfac)2} with diazodi(4-pyridyl)methane as a photoresponsible magnetic coupler. The μSR time spectra have been collected before and after laser irradiation as a function of temperature from 290 K to 10 K and as a function of irradiation time during 30 hours. While we are not successful in detecting meaningful effects of irradiation at the present stage, we discuss potential usability of μSR technique to reveal the expected unconventional feature of the photo-induced magnetic order.
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U2 - 10.1080/10587250008023510
DO - 10.1080/10587250008023510
M3 - Conference article
AN - SCOPUS:0033661455
VL - 343
SP - 103
EP - 108
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
SN - 1542-1406
T2 - Proceedings of the International Symposium Molecular Design and Funtionalities of Assambled Metals Complexes (AMC'99)
Y2 - 30 November 1999 through 2 December 1999
ER -