The lower electrodes may be disposed on the lower electrode contacts. In some embodiments, the upper pinned layer 130 may include at least one of Co or Fe. You can also choose from free samples, paid samples. Cost Effective — Low Overall Costs Coupled with its large capacity, magnetic tape storage is also cost-effective. When the information processing system 400 is implemented to a mobile device, a battery may be further provided for supplying a driving voltage of the information processing system 400.
For a hard disk this time is typically less than 10 ms, but tapes might take as much as 100 s. For example, the third to first insulating interlayers 370, 360, and 350 may be partially etched to form a third opening through which the third impurity region 308 may be exposed. Pollard, Yeong Jae Shin, Haibiao Zhou, Wei Peng, Daesu Lee, Wenjie Meng, Hyunsoo Yang, Jung Hoon Han, Miyoung Kim, Qingyou Lu, Tae Won Noh. In some embodiments, the conductive line structure 245 may further include a mask pattern 240 disposed on the second conductive layer pattern 238. For example, the first lower pinned layer 112 and the second upper pinned layer 134 may include a Co-based or Fe-based ferromagnetic crystalline alloy.
Rising demand for new memory technologies Today, is being generated in unprecedented amounts all over the world, and as such there is an increasing demand for low-cost, low-power, highly-stable, and highly-scalable memory and computing products. Like numerals refer to like elements throughout. An insulation tunnel barrier generating quantum mechanical tunneling may be formed from the tunnel barrier layer 140 between the free layer 150 and the pinned layer structure 100, or spin polarization may be generated by the tunnel barrier layer 140. Different technologies vary in how the head moves relative to the surface of the media and how the regions on the media are organized, but the basic principle is the same. However, according to example embodiments, the first magnetic material patterns 152 may be segmented or separated by the first insulation material patterns 154 such that the memory cell may be defined without an additional etching process.
In example embodiments, the magnetic material patterns may include at least one selected from iron Fe , cobalt Co , nickel Ni , chrome Cr and platinum Pt. In example embodiments, the lower pinned layer 110 may have an amorphous structure. For example, the upper pinned layer 130 may have a body-centered cubic bcc structure or a face-centered cubic fcc structure. Data access is far slower than random access devices, such as hard disks. A ferrimagnetic solution To address these challenges, the team fabricated a magnetic memory device using an interesting class of magnetic material—ferrimagnets. Read and write heads either combined or separate are used to align the magnetic fields on the recording medium. However, the alloy may have a crystalline structure, and may have a high saturation magnetization Ms , and a high surface roughness.
. The selection element may include a diode. For example, an opening including a trench 484 and a via hole 482 may be formed in the upper insulation layer 480. The gate structures 218 may be buried or embedded in the active pattern 202 and the isolation layer 205. The capping layer 160 may be further disposed on the free layer 150. In some embodiments, the capping layer 160 may include a metal oxide such as a magnesium oxide or an aluminum oxide that is substantially the same as, or similar to, that of the tunnel barrier layer 140. The first conductive line 505 may be disposed on the base insulation layer 500 and may extend in, e.
For example, the bit line 299 may extend in the second direction. Bit patterned medium 2008-10-31 2012-01-03 Hitachi, Ltd. In this case, a surface spike may be generated during a crystal growth to cause a relatively high surface roughness. A third impurity region 308 may be formed at an upper portion of the second active pattern 307 adjacent to the second gate structure 340. A mask pattern 310 partially exposing top surfaces of the first active patterns 305 may be formed on the isolation layer 302. The first conductive line 142 may extend in the second direction, and may be electrically connected to the plurality of the first contacts 131.
Each of the lower pinned layer and the upper pinned layer may include a crystalline ferromagnetic layer. The amorphous ferromagnetic layer in the upper pinned layer may contact a top surface of the anti-ferromagnetic spaced. In some embodiments, the second opening may extend in the first direction to expose a plurality of the first contacts 365. Accordingly, the second gate structure including a second gate insulation pattern 342, a second gate electrode 344 and the second gate mask 346 sequentially stacked from a top surface of the second active pattern 307 may be achieved. Slow to Find Data When examining magnetic tape storage advantages and disadvantages, it is important to remember that magnetic tape is a sequential access device.
The first active patterns 305 may be formed in the first region I, and may have an island shape buried in the isolation layer 302. The anti-ferromagnetic spacer may be sandwiched between the first amorphous ferromagnetic pattern and the second amorphous ferromagnetic pattern. The first insulation material pattern 154 may include an oxide, a nitride or oxynitride. In example embodiments, the gate electrode 114 may serve as a word line of the magnetic memory device. In this case, the spacer 120 may be interposed between the pinned layers having the crystalline ferromagnetic structure, and the pinned layer having the amorphous structure and the low Ms may be disposed under the tunnel barrier layer 140. The first gate structure 335 may extend in the first direction and may be buried in the isolation layer 302 and the first active patterns 305 according to a shape of the gate trench 312.
A contact conductive layer sufficiently filling the first and second contact holes may be formed on the first insulating interlayer 125. When the two layers are overlaid, however, a special magnetic interaction swirls SrRuO 3's spins, generating magnetic skyrmions. The crystalline ferromagnetic layer in the lower pinned layer may contact the lower electrode. Consider listening to audio files from a cassette tape. In example embodiments, the second insulating interlayer 146 may be partially removed to form a recess 147 through which the second conductive line 144 may be partially exposed.
A saturation magnetization Ms of the amorphous ferromagnetic layer may be less than that of the crystalline ferromagnetic layer. In this case, the conductive pattern 355 may serve as a source line. Magnetic grains are typically 10 nm in size and each form a single true. In some embodiments, the lower pinned layer 110 may include a Co-based metal or alloy, or a Fe-based metal or alloy in which the non-magnetic element is mixed or doped. Patterned perpendicular magnetic recording medium with multiple magnetic layers and interlayers 2010-01-26 2012-11-29 Showa Denko K.