Binghamton University - Physics, Applied Physics and Astronomy: People: Faculty: Suzuki, Masatsugu: Research Information

Suzuki, Masatsugu

Masatsugu Suzuki

Office: S2-157A
Phone: 607-777-4320
E-mail: suzuki@binghamton.edu

Research Information
Publication List
Advisors & Collaborators
Lecture Notes

Prof. M. Suzuki (left) and Dr.
Itsuko S. Suzuki (right) Picture on the right: Professor M. Suzuki (left) and Dr. Itsuko S. Suzuki (right) using their SQUID magnetometer.

Education

1973-1977 PhD, Physics, University of Tokyo, Japan
1971-1973 MS, Electrical Engineering, Yokohama National University, Japan
1967-1971 BS, Electrical Engineering, Yokohama National University, Japan

Ph.D. Thesis, University of Tokyo (1977)

Experience

1997-present Full Professor, Department of Physics, SUNY at Binghamton
1991-1997 Associate Professor, Department of Physics, SUNY at Binghamton
1991 Visiting Professor, Institute of Molecular Science, Okazaki, Japan
1986-1991 Assistant Professor, Department of Physics, SUNY at Binghamton
1985-1986 Visiting Scientist, Schlumberger-Doll Research, Ridgefield, Connecticut
1984-1985 Visiting Scientist, Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois
1977-1984 Research Associate, Department of Physics, Ochanomizu University, Tokyo, Japan

Research Interest

There have been various important theoretical studies for two dimensional (2D) systems over the years. Only in recent years has a wide variety of 2D systems become available for detailed experimental study so that the relevance of various theoretical ideas could be assessed. Graphite intercalation compounds (GIC’s) form a class of materials whose dimensionality can be systematically controlled by its stage number (the number of graphite layers between adjacent intercalate layers). The research interest on the influence of dimensionality has naturally centered around GIC's. Considerably improved understanding of these compounds has led to more and more use of GIC's as a testing ground for physical phenomena in low dimensional systems, including the area of crossover physics from 3D to 2D behavior.

We have been doing our research on the magnetic properties of magnetic ternary GIC’s such as random-mixture GIC’s (RMGIC’s) and graphite bi-intercalation compounds (GBIC’s) at the Department of Physics, SUNY-Binghamton since 1986. The magnetic random mixture graphite intercalation compounds (RMGIC’s) are novel types of GIC's, where the intercalate layer is formed of a random mixture of two kinds of intercalants. The magnetic graphite bi-intercalation compounds (GBIC’s) offer possibilities for the formation of superlattices such as two different magnetic intercalate layers separated by a single graphite layer. The GBIC has a stacking sequence of GI₁GI₂GI₁GI₂ along the c-axis, where two different intercalate layers (I1 and I2) alternate with a single graphite layer (G). Both magnetic RMGIC’s and GBIC’s provide model systems for studying magnetic phase transitions arising from various kinds of spin frustration effects: (i) spin glass and reentrant ferromagnet (stage-2 Cu_cCo_1-cCl₂ GIC's and Co_cCo_1-cCl₂-FeCl₃ GBIC’s), (ii) random field effect, (iii) 2D percolation behavior, (iv) 2D Ising antiferromagnet on the triangular lattice (CuCl₂ GIC, MnCl₂ GIC), and so on.

We are also interested in (i) the magnetism and superconductivity in layered systems metal-graphite (MG’s), and MxTa₂S₂C (M = Fe, Co, Ni, Cu), (ii) the magnetism of vermiculite intercalation compounds (VIC’s), (iii) the magnetism (superparamagnetism) of Fe₃O₄ nanoparticles and so on.

The content of our research is as follows.

Aging dynamics of spin glass and reentrant ferromagnet in magnetic ternary and quarternary graphite intercalation compounds: Stage-2 CucCo1-cCl2 GIC’s, CocCo1-cCl2-FeCl3 GBIC’s (.pdf, 456KB)
Magnetic phase transition of magnetic ternary graphite intercalation compounds (review articles) (.pdf, 980KB)
Magnetism and superconductivity in metal graphites (MG’s): Bi-MG, Ta-MG, Pd-MG, Rh-MG, Ru-MG, Sn-MG (.pdf, 368KB).
Magnetism in vermiculite intercalation compounds (VIC’s): Ni-VIC, Co-VIC, rare eatth metal-VIC’s (.pdf, 344KB)
Superconductivity and magnetism in layered system Ta2S2C with magnetic intercalates:Ta2S2C and MxTa2S2C (M = Fe, Co, Ni, Cu).
Fermi surface effect in graphite intercalation compounds; angular-dependent magnetoresistance oscillations (AMRO): high stage MoCl5 GIC.
Superspin galss Fe3O4 nanoparticles.and superparamagnet Fe3O4 @ Au nanoparticles
Spin frustration in two-dimensional antiferromagnets on the triangular lattice (stage-2 MnCl2 GIC). Schematic diagram of the sandwich structure (G-Bi-G) in Bi-MG. The c axis stacking sequence of Cu0.5Co0.5Cl2-FeCl3 GBIC Schematic structure of Ni VIC composed of two tetrahedral sheets and one octahedral sheet: Ni2+ (●) and Fe (x).

sandwich structure (G-Bi-G) in Bi-MG. The c axis stacking
sequence of Cu0.5Co0.5Cl2-FeCl3 GBIC The c axis stacking sequence of Cu0.5Co0.5Cl2-FeCl3 GBIC Schematic
structure of Ni VIC composed of two tetrahedral sheets and one
octahedral sheet: Ni2+ (●) and Fe (x).

Schematic diagram of the sandwich structure (G-Bi-G) in Bi-MG.

Experimental techniques

Experimental techniques (SQUID magnetometer) (.pdf, 2.5 MB) used for the study on the aging dynamics in spin glass systems is summarized in the pdf document.

Teaching

His teaching activities have centered around introducing the solid state physics and quantum mechanics into the undergraduate and graduate curriculum at SUNY-Binghamton. He has taught courses including solid state physics, quantum mechanics, statistical thermodynamics, electricity and magnetism, and laboratory courses. The complete list (.pdf, 12 KB) is given in the pdf document.