Magnetic sensor system for magnetography


Context

The Institut Jean Lamour (IJL) is working since 2012 with the company NIPSON Technology (worldwide leader in the design and production of magnetographic digital presses) to develop magnetic media, innovative magnetic components and innovative characterization methods dedicated to magnetic printing. The IJL team “nanomagnetism and spintronics” is the internationally recognized for his fundamental and applied research using magnetic thin films that covers material growth, magnetic characterization and functionalization. NIPSON Technology has mainly an excellent knowledge of phenomenological magnetic write process on the printer drum and attraction of toner that allows for incremental improvements. However, only a more fundamental understanding of the process the micron and nanometer scale will allow disruptive changes in printing methods. The present phD proposal aims to boost the current collaboration and bring it on a more ambitious trajectory.

 

Objectives

The main objective of the PhD work is to increase the printing speed from 150 m/min today to 600 m/min by improving the media materials and demagnetizing process (erasing process between two printings). To that purpose, a system of magnetic sensors will be developed to visualize in situ the magnetic domains on the printer drum. This system will in particular characterize how magnetization writing and demagnetization sequences occur (on what spatial and time scale, what is the orientation of the magnetic domains, etc.). From those experiments, the limiting factors that concern the media materials and the demagnetizing process will be unveiled and optimized to reach the goal pursue by NIPSON Technology. The success of the project supported by IMPACT will finally result in scientific publications on magnetic materials and sensors, one patent and a demonstrator working in real condition in the NIPSON printer (TRL6).

 

Environment

The work will be done in the framework of the “Greater Region Magnetic Center” (including Univ. of Lorraine, Saarbrücken, Kaiserslautern, Liege and Luxembourg). The phD work will greatly benefit from the action Professor@Lorraine with the presence at IJL of Eric Fullerton director of the “Center for memory recording and research” at San Diego.. The PhD work will finally benefit from the unique tools for growth, characterization and functionalization available on the TUBE at IJL.

From left to right, picture of a NIPSON printer. / scheme of magnetography principle / lithographed write heads.

 

PhD advisors

M. Hehn (IUF member, SFP Rocard Price) / T. Hauet (Zivi Price 2015)
Laboratory: Institut Jean Lamour UMR UL CNRS 7198
Economic collaboration and LUE partners: NIPSON Technology / UC San diego

Doctoral school: EMMA 

 

Contact

thomas.hauet@univ-lorraine.fr / michel.hehn@univ-lorraine.fr

 

How to apply

In order to prepare a PhD thesis within the Lorraine Université d’Excellence Program, the interested candidate should consult the PhD topics offered in each social and economic challenges.
These PhD thesis topics are proposed by faculty members or researchers accredited to supervise research.

 

Candidate application period: according to graduate school schedule

  • visit graduate school web site for application rules. EMMA, doctoral school
  • contact mail adresses :
    doctoral school director
    Denis.maillet (@) univ-lorraine.fr
    secretary chrsitne.sartory (@) univ-lorraine.fr

Each candidate may submit an application on up to three separate research topics.

 

Application analysis period by each graduate school
The graduate school reviews the applicants for a doctoral contract in the relevant disciplines. They check the level of supervision for each supervisor and the situation of trained doctors. Each candidate will meet the laboratory director, supervisor or a representative from the graduate school. This interview is to identify the candidate’s motivations and suitability as a candidate for the PhD project proposed by the supervisor. A recommendation will be made to the graduate school. This will summarize the strengths and/or weaknesses of the application.

PhD grants will include monthly income for the PhD student (roughly 1700 € for research only, complement can be provided for teaching missions) and environment for research in the research unit.

Please be aware that in order to offer a variety of subjects, more positions are posted here than available funding. The LUE executive committee will make the final choice on the granted funding (up to 12 positions), based on the recommendations by the doctoral schools.