http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Spin Behavior in a Quarter Rotation of the Magnetic Field
Hitoshi Kuwabara,Yasushi Yamauchi,Andrew Pratt 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.9
The spin rotation of a particle after a quarter rotation of an external magnetic field is calculated numerically and discussed both in the adiabatic and the nonadiabatic schemes. Adding to the wellknown fully adiabatic case, we find that the spin rotates a quarter turn along the magnetic field’s direction when the transient time of the magnetic field matches closely but not exactly the Larmor precession period or its multiples.
On the preparation of iron pyrite from synthetic and natural targets by pulsed electron deposition
Al-Shareeda, Omar,Henda, Redhouane,Pratt, Allan,McDonald, Andrew M. Techno-Press 2013 Advances in nano research Vol.1 No.4
We report on the preparation of iron pyrite ($FeS_2$) using pulsed electron ablation of two targets, namely, a mixture of sulfur and iron compound target, and a natural iron pyrite target. Thin films of around 50 nm in thickness have been deposited on glass substrates under Argon background gas at 3 mTorr, and at a substrate temperature of up to $450^{\circ}C$. The thin films have been analyzed chemically and examined structurally using x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), and visible Raman spectroscopy. The morphology and thickness of the films have been assessed using scanning electron microscopy (SEM) and visible spectroscopic reflectance. The preliminary findings, using a synthetic target, show the presence of iron pyrite with increasing proportion as substrate temperature is increased from $150^{\circ}C$ to $250^{\circ}C$. The data have not shown any evidence of pyrite in the deposited films from a natural target.
Fe\MgO\Cu-Phthalocyanine 복합구조 계면구조와 그 전자기적 특성
배유정(Yu Jeong Bae),이년종(Nyun Jong Lee),김태희(Tae Hee Kim),Andrew Pratt 한국자기학회 2013 韓國磁氣學會誌 Vol.23 No.6
The influence of insertion of an ultra-thin Cu-Phthalocyanine (CuPc) between MgO barrier and ferromagnetic layer in magnetic tunnel juctions (MTJs) was investigated. In order to understand the relation between the electronic and structural properties of Fe\MgO\CuPc, the surface (or interface) analysis was carried out systematically by using spin polarized metastable He de-excited spectroscopy for the CuPc films grown on the Si(001)\5 nm MgO(001)\7 nm Fe(001)\1.6 nm MgO(001) multilayer structure as the thickness of CuPc increases from 0 to 5 nm. In particular, for the 1.6 nm CuPc surface, a rather strong spin asymmetry between upand down-spin band appears while it becomes weaker or disappears for the CuPc films thinner or thicker than ~1.6 nm. Our results emphasize the importance of the interfacial electronic properties of organic layers in the spin transport of the hybrid MTJs.