Magnetic flagellar artificial micro or nano-swimmers functionalized for biotechnology Description The study, based on a top-down approach, aims at developing a new type of functionalized artificial micro/ nanoswimmers with magnetic flagella, for biotechnological applications. Partners SPINTEC : Nanomagnetism integrated in microtechnology INAC/SPrAM/CREA : Functionalization, biotechnological applications LTM (CNRS) : Microfluidics Contact/Discussion François Alouges mathématicien/physicien, CMAP, […]

Micro / nano magnetic functionalized tweezers dispersed in solution for biological and medical applications Description A new type of functionalized magnetic nanoparticles is developed, consisting in micro- nanomagnetic tweezers, attached to the substrate or released in solution, for biomedical applications. Partners SPINTEC : Nanomagnetism integrated in microtechnology INAC/SPrAM/CREAB : Functionalization, biotechnological applications. LTM (CNRS) : […]

The purpose of this WP is twofold. The first purpose is benchmark the performance of these CMOS/MTJ based circuits with those of CMOS-only circuits of similar functionalities. This work is still in progress but some initial results on CMOS/MTJ based microprocessor derived from RISK processor have already been obtained in WP4: Design of low-power hybrid […]

For the fabrication of CMOS/MTJ circuits, three different technological lines were developed and made accessible for HYMAGINE purposes. For simple circuits comprising only a few MTJs interconnected with CMOS transistors, the PTA 400m² upstream research clean-room located in SPINTEC building is used. A MRAM back-end process is operational at PTA and specific process steps required […]

Within HYMAGINE, circuits of increasing complexity have been conceived from simple non-volatile logic gates to microcontrollers or microprocessor. Below is an example of magnetic Look-Up-Table (MLUT) conceived within HYMAGINE and an example of hybrid CMOS/MTJmicroprocessor. Magnetic LUT for FPGA Our purpose was to develop a radiation-hardened FPGA based on MRAM. A FPGA (Field Programmable Gate […]

Thanks to their unique set of assets (non-volatility, speed, density, endurance), STT-MRAM are seen as a unique candidate for DRAM and/or Cache SRAM replacement allowing to drastically reduce the power consumption of electronic circuits thanks to new power gating strategies made possible by the non-volatility of these memories. For these applications, fast write speed (in […]

Modelling and design tools were developed in the frame of HYMAGINE to cover both the fundamental and design aspects of the project. Concerning the fundamental aspects, we developed a code allowing to calculate both the transport properties and the magnetization dynamics in systems of complex geometry wherein the current can be expected to be non-uniform […]

Olivier Fruchart,-, Bernard Diény We calculate the magnetostatic energy of synthetic ferrimagnet (SyF) elements, consisting of two thin ferromagnetic layers coupled antiferromagnetically, e.g. through RKKY coupling. Uniform magnetization is assumed in each layer. Exact formulas as well as approximate yet accurate ones are provided. These may be used to evaluate various quantities of SyF such […]

B Dieny In 2010, the International Technology Roadmap for Semiconductors (ITRS) published an assessment of the potential and maturity of selected emerging research on memory technologies. Eight different technologies of non-volatile memories were compared (ferroelectric gate field- effect transistor, nano-electro-mechanical switch, spin-transfer torque random access memories (STTRAM), various types of resistive RAM, in particular redox […]

Yue Zhang , Weisheng Zhao , Guillaume Prenat , Thibaut Devolder , Jacques-Olivier Klein , Claude Chappert , Bernard Dieny , and Dafiné Ravelosona Magnetic tunnel junctions (MTJ) are considered as one of the most promising candidates for the next generation of nonvolatile memories and programmable logic chips. Spin transfer torque (STT) in CoFeB/MgO/CoFeB MTJs […]