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    Seminars

 

EIIRIS Special Seminar in 2015

EIIRIS Special Seminar

Date:

Friday 27th February, 2015

Time:

11:00a.m.-12:00a.m.

Place: EIIRIS 2 (VBL) 3F Seminar room
Language:

English

Lecturer:

Dr. Jyoti Ranjan Mohanty
(Assistant Professor, Department of Physics
Indian Institute of Technology Hyderabad)

Title:

"Magnetism at nanoscale: Nano-small meets Ultra-fast"

Abstract:

Modern magnetic devices (GMR read heads, magnetic sensors, hard disks and spintronicsdevices) relies on storing or manipulating magnetic information in smaller length scales (nm’s) at faster time scales (nano-seconds to femto-seconds). To advance nano science and nanotechnology, one needs to understand how materials behave at the nanoscale. Advancement of nano-science allows us to prepare structure in nanometer size both by self-assembly and lithography. X-ray magnetic characterization provide us information on nanoscale with element specificity, chemical sensitivity, sensitivity to charge, orbital and spin ordering, high spatial resolution, polarization capability and faster time scales (dynamics using coherence, for coherent diffraction imaging and XPCS). In this talk I will present an overview of thin film magnetism and ultrafast magnetic dynamics of magnetic multilayers exhibiting ordered stripes due to perpendicular magnetic anisotropy (PMA). I will present a rather new and demanding technique to take image without a lens. One can see magnetic structure at the nanoscale level without using any lenses. One immediate application of this lens-less X-ray microscope is the development of smaller data storage devices for computers that can hold more memory.


I will present the evolution of self-assemble magnetic systems as a function of magnetic field, temperature and strain to identify the role of disorder in formation and stability of the domains and their dynamics in these systems using magnetic force microscope (MFM) [1] and x-ray resonant magnetic scattering [2]. The application of an ultra-short laser pulse on a ferromagnetic film allows changing its magnetization in the femto-second time scale. This scientifically fascinating effect has also technological implications, e.g., regarding the ultimate speed at which information can be stored and processed in magnetic media. Even today, the microscopic understanding of laser induced ultrafast demagnetization remains a challenging issue. The recent development of ultra-short soft X-ray pulses by X-ray free electron lasers opens new perspectives in this field. I will give an overview on this topic with our recent findings [3]. On theoretical point of view I will present micromagneticsimulations to understand the energetic and dynamics of the nanoscale magnetic systems.


References:
[1] J. Mohantyet al.,Appl. Phys. Lett. 83, 2829-2831 (2003), Appl. Phys. Lett. 82, 2308-2310 (2003), Phys. Rev. B. 73, 104441 (2006).
[2] A. Tripathi, J. Mohantyet al., ProcNatlAcadSciUSA 108(33), 13393-13398 (2011).
[3] Phys. Rev. Lett., 108, 267403 (2012), Nature Communication 3, 1100, 2012: DOI: 10.1038/ncomms2108.

URL:

Evening Coilloquia

 

http://www.eiiris.tut.ac.jp

 

EIIRIS Special Seminar

Date:

Tuesday 23rd April, 2015

Time:

4:00p.m.-5:00p.m.

Place: EIIRIS-2 (VBL) 3F, Seminar Room
Lecturer:

Prof. Hideo Iwasaki (Wasea University)

Title:

「シアノバクテリアの時空間パターン形成と生命美学」(in Japanese)

URL:

Evening Coilloquia

http://www.f.waseda.jp/hideo-iwasaki
http://www.facebook.com/metaphorest.net

 

 

Evening Colloquium in 2015

 

EIIRIS Evening Colloquium

Date:

Tuesday 20th January, 2015

Time:

5:30p.m.-6:30p.m.

Place: EIIRIS 1F, Entrance Hall
Language:

Japanese/English/informal conversation

Style:

Keynote lecture and free discussion

Keynote Lecture:

Professor Takaaki Takashima's talk entitled,

"IBM - A global company doing business in Japan"

Remark:

Anybody is welcome to participate and enjoy the talk!
Fee: 100 JPY for Refreshments.

URL:

Evening Coilloquia

 

IBM, a global enterprise, is running business in Japan more than 75 years. A history and transformation of IBM’s business in Japan are introduced. An insight that the lecturer got from the experience of working in IBM for 32 years is also shared. As IBM is always running ahead of globalization, learning its transformation will be helpful in prediction and solution of university's issues in globalization.

 

http://www.eiiris.tut.ac.jp

 

EIIRIS Evening Colloquium

Date:

Tuesday 24th March, 2015

Time:

5:30p.m.-6:30p.m.

Place: EIIRIS 1F, Entrance Hall
Language:

Japanese/English/informal conversation

Style:

Keynote lecture and free discussion

Keynote Lecture:

Professor Masahiro Fukumoto's talk on Mechanical Engineering

Remark:

Anybody is welcome to participate and enjoy the talk!
Fee: 100 JPY for Refreshments.

URL:

Evening Coilloquia

 

http://www.eiiris.tut.ac.jp

 

EIIRIS Evening Colloquium

Date:

Tuesday 14th April, 2015

Time:

5:30p.m.-6:30p.m.

Place: EIIRIS 1F, Entrance Hall
Language:

Japanese/English/informal conversation

Style:

Keynote lecture and free discussion

Keynote Lecture:

Professor Saburo Tanaka's talk on SQUID and its application

Remark:

Anybody is welcome to participate and enjoy the talk!
Fee: 100 JPY for Refreshments.

URL:

Evening Coilloquia

 

http://www.eiiris.tut.ac.jp

 

EIIRIS Evening Colloquium

Date:

Tuesday 12th May, 2015
Wednesday 20th May, 2015 (postponed due to typhoon)

Time:

5:30p.m.-6:30p.m.

Place: EIIRIS 1F, Entrance Hall
Language:

Japanese/English/informal conversation

Style:

Keynote lecture and free discussion

Keynote Lecture:

Professor Hiroyuki Muto's talk on Nano-Micro Technology

Remark:

Anybody is welcome to participate and enjoy the talk!
Fee: 100 JPY for Refreshments.

URL:

Evening Coilloquia

 

http://www.eiiris.tut.ac.jp

 

EIIRIS Evening Colloquium

Date:

Tuesday 9th June, 2015

Time:

5:30p.m.-6:30p.m.

Place: EIIRIS 1F, Entrance Hall
Language:

Japanese/English/informal conversation

Style:

Keynote lecture and free discussion

Keynote Lecture:

Professor Takashi Ohira's talk on Fourth Generation Roadway Vehicles

Remark:

Anybody is welcome to participate and enjoy the talk!
Fee: 100 JPY for Refreshments.

URL:

Title: Toyohashi University of Technology Creates a Cradle of Fourth Generation Roadway Vehicles

Abstract: The history of railways starts with steam locomotives powered by coal, then diesel-oil based engines, followed by electric motors from charged batteries, and culminates in electricity from overhead cables. These four steps should be applicable for the development of practical "roadway vehicles" as well. With this background, Toyohashi University of Technology is creating a cradle of fourth-generation personal mobility electric vehicles on campus this year. The talk will include a spectacular demonstration featuring a scale model of this electric vehicle.

Evening Coilloquiaslides(inside campus only)

 

http://www.eiiris.tut.ac.jp