Atsuko FUKAYA
Postdoctoral Researcher
|
March 1997 |
Doctor of Science, Graduate School of Science, Ochanomizu University
Doctor thesis "Behavior under magnetic fields and spin dynamics of the random magnets -Insulating mixed compounds MnxMg1-xTiO3and FexMn1-xTiO3" |
1997-2001 |
Postdoctoral Researcher, The Institute of Physical and Chemical Research (RIKEN) |
2001-2002 |
Postdoctoral Researcher (JSPS fellow), Physics Department, Columbia University |
2002-2003 |
Postdoctoral Researcher, Institute for Chemical Research, Kyoto University |
2003-2004 |
Postdoctoral Researcher, Institute for Materials Research, Tohoku University |
2005-2006 |
Research Assistant, Condensed Molecular Materials Laboratory, RIKEN |
2006 to 2007 |
Postdoctoral Researcher, Condensed Molecular Materials Laboratory, RIKEN |
Structural studies of molecular conductors by X-ray diffraction technique
Methods
μSR
muon spin relaxation
muon spin resonance
level crossing resonance |
Nuetron scattering
elastic scattering |
Magnetization
dc-magnetization
ac-susceptibility
high field magnetization |
X-ray diffraction
powder diffraction
Laue method
Single crystal x-ray diffraction |
Sample synthesis and growth of single crystal
solid state reaction
floating-zone method
bridgeman
slow-evaporation method |
Previous Subjects
strongly correlated systems
lightly diluted La2-xSrxCu1-yMyO4
(M=Zn, Ni, Co, Mn)
magnetic soliton lattice
CuB2O4 and the impurity effects
frustrated spin systems (S=1/2 kagome lattice systems)
(Cu,Zn)3V2O4(OH)2
2H2O
Cu3Bi(SeO2)2O2X
(X=Cl and Br)
quantum effects in low dimensional spin systems
Haldane-gap system : NiC2O4 2MIz,H20,
NENP
spin-ladder system : (Cu1-xZnx)2(1,4-diazacycloheptane)2Cl2
2D AF : Cu3B2O6
2D dimer:Cu2(BO3B)2
random magnets(spin-glass, random field effect)
(M1,M2)TiO3 (M1,M2=Mn,Fe,Mg)
- A. Fukaya, I. Watanabe, K. Yamada, and K. Nagamine
"Spin dynamics in a copper metaborate CuB2O4 studied by muon spin relaxation"
J. Phys. Soc. Jpn., 75, 113705 (2006).
- A. T. Savici, A. Fukaya, I. M. Gat-Malureanu, T. Ito, P. L. Russo, Y. J. Uemura, C. R. Wiebe, P. P. Kyriakou, G. J. MacDougall, M. T. Rovers, G. M. Luke, K. M. Kojima, M. Goto, S. Uchida, R. Kadono, K. Yamada, S. Tajima, T. Masui, H. Eisaki, N. Kaneko, M. Greven, and G. D. Gu
"Muon spin relaxation studies of magnetic-field-induced effects in high-T-c superconductors"
Phys. Rev. Lett., 95, 157001 (2005).
- T. Ito, Y. Fudamoto, A. Fukaya, I. M. Gat-Malureanu, M. I. Larkin, P. L. Russo, A. Savici, Y. J. Uemura, K. Groves, R. Breslow, K. Hotehama and S. Yamanaka, P. Kyriakou, M. Rovers, G. M. Luke, and K. M. Kojima
"Two-dimensional nature of uperconductivity in intercalated layered systems LixHfNCl and LixZrNCl: muon spin relaxation and magnetization measurements"
Phys. Rev. B, 69, 134522 (2004).
- A. Keren, J. S. Gardner, G. Ehlers, A. Fukaya, E. Segal, and Y. J. Uemura
"Dynamic properties of a diluted pyrochlore cooperative paramagnet (TbpY1-p)2Ti2O7"
Phys. Rev. Lett., 92, 107204 (2004).
- A. Fukaya, Y. Fudamoto, I. M. Gat, T. Ito, M. I. Larkin, A. T. Savici, Y. J. Uemura, P. P. Kyriakou, G. M. Luke, M. T. Rovers, K. M. Kojima, A. Keren, M. Hanawa, and Z. Hiroi
"Muon Spin Relaxation and Susceptibility Studies of the Pure and Diluted Spin 1/2 Kagom\'{e}-like Lattice system (CuxZn1-x)3V2O7(OH)2 2H2O"
Phys. Rev. Lett., 91 207603 (2003).
- C. R. Wiebe, J. E. Greedan, P. P. Kyriakou, G. M. Luke, J. S. Gardner, A. Fukaya, I. M. Gat-Malureanu, P. L. Russo, A. T. Savici, and Y. J. Uemura
"Frustration-driven spin freezing in the S=1/2 fcc perovskite Sr2MgReO6"
Phys. Rev. B, 68 134410 (2003).
- I. M. Gat-Malureanu, A. Fukaya, M. I. Larkin, A. J. Millis, P. L. Russo, A. T. Savici, Y. J. Uemura, P. P. Kyriakou, G. M. Luke, C. R. Wiebe, Y. V. Sushuko, R. H. Heffner, D. E. MacLaughlin, D. Andreica, A. Schenck, G. M. Kalvius
"Field dependence of muon spin relaxation rate in MnSi"
Phys. Rev. Lett., 90, 157201 (2003).
- G. M. Luke, M. T. Rovers, A. Fukaya, I. M. Gat, M. I. Larkin, A. Savici, Y. J. Uemura, K. M. Kojima, P. M. Chaikin, I. J. Lee, and M. J. Naughton
"Unconventional superconductivity in (TMTSF)2ClO4"
Physica B, 326, 378-380 (2003).
- A. Fukaya, Y. Fudamoto, I. M. Gat, T. Ito, M. I. Larkin, A. T. Savici, Y. J. Uemura, P. P. Kyriakou, G. M. Luke, M. T. Rovers, H. Kageyama, and Y. Ueda
"Spin dynamics in the two-dimensional spin system SrCu2(BO3)2"
Physica B, 326, 446-449(2003).
- A. Fukaya, I. Watanabe, and K. Nagamine
"Long-Range Order in a Copper Borate Cu3B2O6"
J. Phys. Soc. Jpn., 70, 2868-2871 (2001).
- A. Fukaya, J. Satooka, A. Ito, K. Nakajima, K. Kakurai, K. Nishiyama, and K. Nagamine
"Magnetic field dependence of spin-glass freezing temperature in a diluted antiferromagnet Mn0.55Mg0.45TiO3"
J. Appl. Phys., 89, 7053-7055 (2001).
- A. Agui, M. Mizumaki, Y. Saitoh, T. Matsushita, T. Nakatani, A. Fukaya, and E. Torikai
"Soft x-ray absorption spectra of ilmenite family"
J. Syncrotron Rad., 8, 907-909 (2001).
-
A. Fukaya, A. Ito, H. Aruga Katori, and T. Goto
"Effects of Random Fields on the Phase Diagram in the Field--Temperature Plane of the Diluted Antiferromagnet MnxMg1-xTiO3"
J. Phys. Soc. Jpn., 69, 3027-3039 (2000).
- W. Higemoto, H. Tanaka, I. Watanabe, S. Ohira, A. Fukaya, and K. Nagamine
"Anomalous magnetic dependence of muon spin relaxation in S=1/2 double chain system KCuCl3 and TlCuCl3"
Physica B, 289-290, 172-175 (2000).
- A. Fukaya, W. Higemoto, M. Hagiwara, and K. Nagamine
"μSR study of a spin ladder system (Cu1-xZnx)2(1,4-diazacycloheptane)2Cl4"
Physica B, 289-290, 189-193 (2000).
- A. Fukaya, I. Watanabe, S. Ohira, and K. Nagamine
"Radio-frequency muon spin resonance of Haldane-gap systems, Ni(C2H8N2)2NO2(ClO4) and NiC2O4 2(2-methylimidazole)"
Physica B, 289-290, 185-188 (2000).
- A. Ito, C. Uchikoshi, A. Fukaya, S. Morimoto, K. Nakajima, and K. Kakurai
"Competing anisotropy origin hysteretic behavior of the mixed Ising-XY antiferromagnet Fe0.50Co0.50TiO3 in magnetic fields"
J. Phys. Chem. Sol., 60, 1233-1235 (1999).
- A. Fukaya, A. Ito, K. Nakajima, and K. Kakurai
"Neutron scattering study of the spin-glass Mn0.55Mg0.45TiO3 under magnetic fields"
J. Phys. Chem. Sol., 60, 1245-1247 (1999).
- A. Fukaya, A. Ito, K. Nakajima, and K. Kakurai
"Magnetic phase diagram of the diluted antiferromanget Mn0.81Mg0.19TiO3 in the field-temperature plane"
J. Phys. Chem. Sol., 60, 1241-1243 (1999).
- J. Satooka, A. Fukaya, A. Ito, E. Torikai, K. Nishiyama, and K. Nagamine
"Spin dynamics of the duluted antiferromagnet FexMg1-xTiO3 by muon spin relaxation method"
Hyperfine Interactions, 120-121, 611-614 (1999).
- A. Fukaya, J. Satooka, A. Ito, E. Torikai, K. Nishiyama, and K. Nagamine
"Spin dynamics of diluted antiferromagnetis MnxMg1-xTiO3 by μSR method"
Hyperfine Interactions, 120-121, 615-618 (1999).
- A. Fukaya, S. Ohira, I. Watanabe, M. Hagiwara, and K. Nagamine
"μSR study of a mixed compound NiC2O4 2(2-methylimidazole)x(H2O)1-x"
Hyperfine Interactions, 120-121, 619-622 (1999).
- J. Satooka, A. Fukaya, A. Ito, E. Torikai, K. Nishiyama, and K. Nagamine
"The Spin Dynamics of the Cluster-Glass Fe0.25Mg0.75TiO3 Probed by the Muon Spin Relaxation Method"
Hyperfine Interactions, 104, 363-368 (1997).
- A. Fukaya, A. Ito, E. Torikai, K. Nishiyama, and K. Nagamine
"Studies of the Diluted Antiferromagnets MnxMg1-xTiO3 with x=0.55 and 0.70 by Muon spin Relaxation Method"
Hyperfine Interactions, 104, 287-292 (1997).
- A. Ito, C. Oyama, A. Fukaya, H. Kato, and S. Miura
"Magnetization process of the mixed compound with exchange frustrations Fe0.65Mn0.35TiO3 and Fe0.50Mn0.50TiO3 - anomalous dependence on the sweep-rate of magnetic fields"
J. Phys. Soc. Jpn., 66, 3636-3647 (1997).
- A. Ito, A. Fukaya, K. Fujii, and H. Kato
"Anomalous Sweep-rate Dependence of the Magnetization Process of Two Mixed Compound FexMn1-xTiO3 with Exchange Frustrations"
Advanced Research in High Field Laboratory for Superconducting Materials, A42, 295-302(1996).
- A. Fukaya, A. Ito, H. Aruga Katori, and T. Goto
"Effect of Random Fields on the Phase Diagram of the Diluted Antiferromagnet Mn0.80Mg0.20TiO3 in the Field-Temperature Plane"
J. Phys. Soc. Jpn., 64, 4557-4560 (1995).
- A. Tobo, A. Fukaya, A. Ito, and K. Motoya
"Concentration-temperature phase diagram of the diluted antiferromagnet MnxMg1-xTiO3"
J. Magn. and Magn. Mater., 140-144, 1537-1538 (1995).
- A. Fukaya, A. Tobo, A. Ito, H. Aruga Katori, and T. Goto
"Spin-flop Transition of the Diluted Antiferromagnet MnxMg1-xTiO3"
Physica B, 201, 88-90 (1994).