Effects of MgO Barrier Thickness on Magnetic Anisotropy Energy Constant in Perpendicular Magnetic Tunnel Junctions of (Co/Pd)$_{n}$/MgO/(Co/Pt)$_{n}$

Lee, Ching‐Ming; Lee, Jia-Mou; Ye, Lin-Xiu; Wang, Shengyuan; Wang, Yi-Rung; Wu, Te‐Ho

doi:10.1109/tmag.2008.2002594

Cited by 9 publications

(1 citation statement)

References 14 publications

(13 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where I, M S , R S are current, saturation magnetization and Hall coefficient of soft and hard layers respectively [15].…”

Section: Resultsmentioning

confidence: 99%

Magnetic Anisotropy in [Pt/Co]4/MgO/[Co/Pt]2 Multilayers

Zhou

et al. 2019

MSF

View full text Add to dashboard Cite

A serial of [Pt/Co]4/MgO/[Co/Pt]2multilayers were prepared by magnetron sputtering in this study and Antiferromagnetic (AF) interlayer coupling was observed with increasing MgO spacer thickness. Perpendicular magnetic anisotropy of soft layer in [Pt/Co]4/MgO/[Co/Pt]2multilayers were measured by Extraordinary Hall Effect (EHE). The direction of the magnetic field was parallel to the direction of the current. The results revealed that perpendicular magnetic anisotropy constant Kuoscillates with the thickness of MgO layer which is between 1.3 to 3.3 nm. The period of this oscillation is about 0.43 nm. This is very close to the monolayer (100) MgO. With increasing MgO spacer, the periodic variation of interface between [Pt/Co]nand MgO layer may be one of the reasons for this oscillation behavior of Ku.

show abstract

“…where I, M S , R S are current, saturation magnetization and Hall coefficient of soft and hard layers respectively [15].…”

Section: Resultsmentioning

confidence: 99%

Magnetic Anisotropy in [Pt/Co]4/MgO/[Co/Pt]2 Multilayers

Zhou

et al. 2019

MSF

View full text Add to dashboard Cite

show abstract

MgO thickness-induced spin reorientation transition in Co0.9Fe0.1/MgO/Co0.9Fe0.1 structure

Lasek

Gładczuk

Sawicki

et al. 2017

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

The magnetic anisotropy (MA) of Mo/Au/Co 0.9 Fe 0.1 /Au/MgO(0.7 -3 nm)/Au/Co 0.9 Fe 0.1 /Au heterostructure has been investigated at room temperature as a function of MgO layer thickness (t MgO ). Our studies show that while the MA of the top layer does not change its character upon variation of t MgO , the uniaxial out-of-plane MA of the bottom one undergoes a spin reorientation transition at t MgO of about 0.8 nm, switching to the regime where the coexistence of in-and out-ofplane magnetization alignments is observed. The magnitudes of the magnetic anisotropy constants have been determined from ferromagnetic resonance and dc-magnetometry measurements. The origin of MA evolution has been attributed to a presence of an interlayer exchange coupling (IEC) between Co 0.9 Fe 0.1 layers through the thin MgO film.

show abstract

Magnetic properties of TbFeCo-based perpendicular magnetic tunnel junctions

Lee

Hsieh

et al. 2010

Journal of Applied Physics

View full text Add to dashboard Cite

The perpendicular magnetic tunnel junctions of structure Si/Ti(10 nm)/TbFeCo(22 nm)/CoFeB(2 nm)/MgO(1 nm)/CoFeB(1 nm)/TbFeCo(3 nm)/Ti(10 nm) were deposited on SiNx substrates at room temperature with various Tb contents. The samples were then annealed at different temperatures ranging from 150 to 350 °C. We found that the magnetic tunnel junctions with free-layer Tb content near the compensation point show largest coercivities and best squareness, and more important, best annealing endurance. The maximum magnetoresistance ratio is 4.62% for Tb content 19.7% as deposition. Annealing treatment cannot increase MR further because no crystalline MgO structures were present, even though the samples were annealed up to 350 °C.

show abstract

Effects of MgO Barrier Thickness on Magnetic Anisotropy Energy Constant in Perpendicular Magnetic Tunnel Junctions of (Co/Pd)$_{n}$/MgO/(Co/Pt)$_{n}$

Cited by 9 publications

References 14 publications

Magnetic Anisotropy in [Pt/Co]<sub>4</sub>/MgO/[Co/Pt]<sub>2</sub> Multilayers

Magnetic Anisotropy in [Pt/Co]<sub>4</sub>/MgO/[Co/Pt]<sub>2</sub> Multilayers

MgO thickness-induced spin reorientation transition in Co0.9Fe0.1/MgO/Co0.9Fe0.1 structure

Magnetic properties of TbFeCo-based perpendicular magnetic tunnel junctions

Contact Info

Product

Resources

About