What is MRAM?
Non-volatile memory that stores data as the difference in resistance caused by the magnetization direction of a magnetic tunnel junction (MTJ).
Field: Emerging memories
MRAM in the explanations
MRAM uses a magnetic tunnel junction (MTJ): two magnetic layers sandwiching an insulating layer about 1 nm thick.
Which correctly describes how MRAM stores data?MRAM stores data in magnetization, so unlike flash—whose oxide wears—it endures far more cycles (over 10¹⁰), writes in a few to tens of ns, and needs no erase step.
Compared with flash memory, which is a general advantage of…Reported independently by Japan's AIST and IBM in 2004, this widened the 0/1 resistance gap, enabling higher-capacity HDD read heads and practical MRAM.
Which material is widely used as the tunnel barrier in MRAM…
Questions that mention MRAM (19)
- Which correctly describes how MRAM stores data?
- Compared with flash memory, which is a general advantage of MRAM?
- Which material is widely used as the tunnel barrier in MRAM magnetic tunnel junctions (MTJs) and gives a large tunnel magnetoresistance ratio?
- Which is one reason MRAM is attracting attention as embedded non-volatile memory for microcontrollers and similar chips?
- In MRAM, what problem tends to arise if the storage element (MTJ) is made too small?
- How is data read from MRAM?
- In which process of a logic LSI is the MRAM storage element (MTJ) generally built?
- What does the "M" in MRAM stand for?
- What is the structure called that stores one bit in MRAM, consisting of two magnetic layers sandwiching a thin insulating layer?
- Which external environmental factor requires care when using MRAM?
- Why are MRAM and FeRAM sometimes used in high-radiation environments such as space equipment?
- Which effect, being studied to reduce MRAM write energy, changes the magnetic anisotropy of a magnetic layer with a voltage?
- Which non-volatile memory has been integrated on the same chip as logic circuits to store microcontroller programs?
- Which property does FeRAM (ferroelectric memory) use to store information?
- How is information written in STT-MRAM?
Related terms
Magnetic tunnel junction (MTJ) PCM (phase-change memory) FeRAM (ferroelectric RAM) ReRAM (resistive RAM) TMR ratio CMOS Microcontroller STT-MRAM 3D XPoint Chalcogenide