Perovskite-based RRAM developer 4DS Memory raises $5.45 million

4DS Memory logoAustralia-based RRAM developer 4DS Memory announced that it has raised a total of $7.6 million AUD ($5.45 million USD) in two financing round. The 4DS memory cell is constructed using an advanced perovskite material, which has the same crystal structure as the inorganic compound calcium titanium oxide.

4DS Memory says that it will use the funds to further develop its Interface Switching ReRAM technology with imec and Western Digital's subsidiary, HGST.

2D perovskite shown promise for advanced memory devices

A Pohang University of Science & Technology (POSTECH) research team has designed a halide perovskite material for next-generation memory devices. Characteristics like low-operating voltage and high-performance resistive switching memory could mean great commercialization potential.

As rapid distribution and transmission of high-quality contents are growing rapidly, it is critical to develop reliable and stable semiconductor memories. To this end, the POSTECH research team succeeded in designing an optimal halide perovskite material (CsPb2Br5) that can be applied to a ReRAM device by applying first-principles calculation based on quantum mechanics.

EPFL team uses perovskites to show how magneto-optical drives could be cheaper and faster than HDDs

Physicists at the École polytechnique fédérale de Lausanne (EPFL) in Switzerland have used perovskite materials to alter a magnetic bit’s polarity with light, potentially opening the door to denser and faster disk drives using magneto-optical technology.

EPFL introduces perovskite-based light-operated hard drives image

Researchers László Forró, Bálint Náfrádi, Péter Szirmai and Endre Horváth suggest magneto-optical drives using this method could be physically smaller, faster and cheaper than today’s disk drives. They also say it is an alternative to heat-assisted magnetic recording (HAMR).

Thin films of perovskite oxides may enable writing data at terahertz frequency

scientists at the University of Warwick, Oxford University, University of Cambridge, Los Alamos National Laboratory and University at Buffalo in the U.S have found a colossal magnetoresistance at terahertz frequencies at room temperature in high-quality functional perovskite-based nanocomposites. This may find use in nanoelectronics and in THz optical components controlled by magnetic fields.

Thin films of perovskite oxides may enable writing data at terahertz frequency

Electronics that can read and write data at terahertz frequency, rather than at a few gigahertz, can lead to faster performance. Creating such devices would be aided by the use of materials that can undergo a huge change in how easily they conduct electricity in response to a magnetic field at room temperature. Scientists believe thin films of perovskite oxides hold promise for such uses, but such behavior has until now never been seen at these frequencies in these films.

imec to assist 4DS Memory in developing a process for its perovskite-based RRAM memory

Australia-based RRAM developer 4DS Memory announced that it has signed an agreement with Belgium-based imec to develop a transferable manufacturing process for its technology. As part of the agreement the two parties will demonstrate the process with a 1Mbit test chip.

The 4DS memory cell is constructed using an advanced perovskite material, which has the same crystal structure as the inorganic compound calcium titanium oxide. The cells have no filaments and are so claim to be easier to scale compared to filamentary RRAM.