ETSIT  ¦ Agenda Institucional  ¦  Evento

Magnetic Phase Interference in Artificial Magnetic Lattices: Functions and Applications to Optical, High-Frequency, & Spin Wave



Lugar:
Salón de Grados. ETSI de Telecomunicación.
Fecha y Hora:
Fecha de Inicio: 08 noviembre 2018
Hora de Inicio: 12:00
Hora de Finalización: 14:00

Organizador:
ISOM
Descripción:

 

Ponente: Prof. Mitsuteru Inoue (IEEE Magnetics Society Distinguished Lecturer for 2018)

Organismo: Toyohashi University of Technology, Japan

The introduction of artificial magnetic structures into magnetic materials can induce novel electromagnetic and spin-wave behavior. Nano- and submicrometer-scale artificial magnetic lattices (AMLs) can control optical (electromagnetic) waves in magnetophotonic crystals [1], volumetric magnetic holograms [2], and labyrinthian magnetic domain structures [3], and can affect spin waves in magnonic crystals [4].

 

In this talk, the fundamental properties of such AMLs, mainly in magnetic garnet films and alloy thin films, are discussed, followed by demonstrations of their applications in optical and spin-wave micro-devices driven by magnetic phase interference: volumetric magneto-optic (MO) hologram memories [2] and three-dimensional MO holographic displays [5] with magnetophotonic crystals; high-speed MO Q-switch micro-chip lasers with iron-garnet films with labyrinthian magnetic domain structures [3]; and highly sensitive magnetic sensors and spinwave logic circuits with magnonic crystals [6].

 

Prospective future spin-wave devices with AMLs will be discussed in the context of the new paradigm of magnonics (electron non-transport electronics), where spin waves play an important role as the information carrier.

 

 

[1] T. Goto et al., “Magnetophotonic crystal comprising electro-optical layer for controlling helicity of light,” J. Appl. Phys., vol. 111, 07A913, 2012.

[2] Y. Nakamura et al., “Error-free reconstruction of magnetic hologram via improvement of recording conditions in collinear optical system,” Optics Exp., vol. 25, pp. 15349-15357, 2017.

[3] R. Morimoto et al., “Magnetic domains driving a Q-switched laser,” Sci. Rep., vol. 6, 38679, 2016.

[4] N. Kanazawa et al., “Metal thickness dependence on spin wave propagation in magnonic crystal using yttrium iron garnet,” J. Appl. Phys., vol. 117, 17E510, 2015.

[5] K. Nakamura et al., “Improvement of diffraction efficiency of three-dimensional magnetooptic spatial light modulator with magnetophotonic crystal,” Appl. Phys. Lett., vol. 108, 02240, 2016.

 

Biography:

 

Mitsuteru Inoue received Ph.D. from Toyohashi University of Technology (TUT) in 1989, and he is now Executive Trustee and Vice President of TUT.

His expertise lies in the field of magnetic materials and their applications. In particular, he is interested in the interaction phenomena between spin system and various physical quantities including light (electromagnetic wave), acoustic wave, electron transport, heat transport.

 

Recent his works are focused on materialization of novel functions with existing materials by introducing artificial structures. Along these works, he is now working on magnonics, in which spin waves are controlled by artificially introduced magnetic structures. He has published more than 250 full papers on the above fields. He was a visiting professor of Stanford University and Moscow State University. He received outstanding award from Magnetic Soc. Japan, and from Ministry of Education, Science &Technology, Japan.

 

 

 


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IEEE_Magn_Soc_DL2018.pdf