Abstract:
A perpendicular magnetic recording medium having a good thermal stability and a high recording density is provided. The perpendicular magnetic recording medium includes at least a first and a second perpendicular magnetic recording layer and a substrate supporting the first and the second perpendicular magnetic recording layers. The first and the second perpendicular magnetic recording layers have different physical/magnetic properties and are formed of materials that compensate the different physical/magnetic properties. The first and the second perpendicular magnetic recording layers are selected from a layer for improving perpendicular magnetic anisotropic energy (Ku), a layer for reducing the size of crystal grains, a layer for reducing the size of magnetic domains, a layer for increasing an SNR, a layer for improving signal output, a layer for reducing noise, a layer for improving the uniformity of crystal grain sizes, and a layer for improving the uniformity of magnetic domain sizes.
Abstract:
A push-up type portable charging cradle having a stereo sound system is disclosed. The portable charging cradle includes a cradle body and a push-up type cradle rotatably mounted in the cradle body so that the push-up type cradle protrudes from or retracts to the top surface of the cradle body according to whether the push-up type cradle is pushed or not.
Abstract:
A magnetoresistive random access memory is provided. The magnetoresistive random access memory includes a first magnetic layer of which the direction of a magnetic vector is fixed, a second magnetic layer which is positioned in parallel with the first magnetic layer and of which the direction of a magnetic vector is reversible, and a non-magnetic layer interposed between the first and second magnetic layers, the second magnetic layer having an aspect ratio of 2 or less, a thickness of 5 nm or less, and a saturation magnetization of 800 emu/cm3 or less. The magnetoresistive random access memory has kink-free, magneto-resistance characteristics, thereby exhibiting high selectivity regardless of process capability.
Abstract translation:提供了磁阻随机存取存储器。 磁阻随机存取存储器包括固定磁矢量方向的第一磁性层,与第一磁性层平行定位的第二磁性层,并且磁矢量的方向可反转, 介于第一和第二磁性层之间的磁性层,第二磁性层的纵横比为2以下,厚度为5nm以下,饱和磁化强度为800emu / cm 3以下。 或更少。 磁阻随机存取存储器具有无扭结的磁阻特性,从而表现出高的选择性,而与处理能力无关。
Abstract:
A perpendicular magnetic recording medium having a perpendicular magnetic recording layer provided on a substrate and a soft underlayer formed between the substrate and the perpendicular magnetic recording layer. The soft underlayer includes a plurality of soft underlayers having different saturation magnetizations so as to improve signal-to-noise ratio, and at least one of the soft underlayers has a magnetization easy axis in a radial direction so as to improve transition noise.
Abstract:
Provided is a thermally stable perpendicular magnetic recording medium. The provided perpendicular magnetic recording medium includes a perpendicular magnetic recording layer between a lower layer and an upper layer, wherein a thickness of the perpendicular magnetic recording is determined by Equation 7, in the case of K>105 erg/cm3 and D > ( 30 k B T π K A ) 1 / 2 , and determined by Equation 9, in the case of K>105 erg/cm3, n > 30 k B T π D 2 A K , and D ≤ ( 30 k B T π K A ) 1 / 2 . The provided perpendicular magnetic recording medium includes the perpendicular magnetic recording layer having a thermally stable thickness even when the value of K is large and an energy barrier does not follow KV. Thus, data recorded on the provided perpendicular magnetic recording medium is preserved for over 10 years.
Abstract:
Provided are a novel compound having skin-whitening, anti-oxidizing and PPAR activities and a medical use thereof, and the compound has skin-whitening activities for the suppression of tyrosinase, and accordingly, is useful for use in skin-whitening pharmaceutical composition or cosmetic products; has anti-oxidant activities, and accordingly, is useful for the prevention and treatment of skin-aging; and has PPAR activities, and in particular, PPARα and PPARγ activities, and accordingly, is useful for use in pharmaceutical compositions or health foods which are effective for the prevention and treatment of obesity, metabolic disease, or cardiovascular disease.