scholarly journals Demagnetization dynamics of C-doped FePt film

2016 ◽  
Vol 65 (12) ◽  
pp. 127802
Author(s):  
Pan Qun-Feng ◽  
Zhang Ze-Yu ◽  
Wang Hui-Zhen ◽  
Lin Xian ◽  
Jin Zuan-Ming ◽  
...  
Keyword(s):  
Fept Film

scholarly journals Preparation of L10-FePt film for perpendicular magnetic recording media by using FePt/Au mutilayers

2009 ◽  
Vol 58 (5) ◽  
pp. 3503
Author(s):  
Feng Chun ◽  
Zhan Qian ◽  
Li Bao-He ◽  
Teng Jiao ◽  
Li Ming-Hua ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Fept Film ◽  
Perpendicular Magnetic Recording

Microstructure and magnetic properties of FePt film with combined MoC/(Mg–X)O (X=Cu, Ni, Co) intermediate layers

2017 ◽  
Vol 422 ◽  
pp. 262-270 ◽  
Author(s):  
Jai-Lin Tsai ◽  
Jie-Lin Tzeng ◽  
Keng-Chun Hu ◽  
Hsu-Kang Li ◽  
Zu-Yu Pan ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Fept Film ◽  
Intermediate Layers ◽  
Microstructure And Magnetic Properties

scholarly journals Influence of an MgTiTaON Inserted Layer on Magnetic Properties and Microstructure of FePtAgC Films

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 238 ◽  
Author(s):  
Jai-Lin Tsai ◽  
Cheng Dai ◽  
Jyun-you Chen ◽  
Ting-Wei Hsu ◽  
Shi-Min Weng ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Cross Section ◽  
Lattice Relaxation ◽  
Fept Film ◽  
Perpendicular Magnetization ◽  
Aspect Ratios ◽  
Out Of Plane ◽  
Temperature Deposition ◽  
Critical Lattice ◽  
C 30

The FePt film above 10 nm critical lattice relaxation thickness was prepared and the ultrathin MgTiTaON layer was interleaved in between FePt film and the multilayer stack is FePt(6 nm)/[MgTiTaON(1 nm)/FePt(4 nm)]2. Next, the FePt films were co-sputtered with (Ag, C) segregants during deposition and the layer stacks is FePt(6 nm)(Ag, C)(x vol %)/[MgTiTaON (1 nm)/FePt(4 nm)(Ag, C) (x vol %)]2 (x = 0, 10, 20, 30, 40). After high temperature deposition at 470 °C, the granular FePt(Ag, C, MgTiTaON) film illustrated perpendicular magnetization and the out-of-plane coercivity (Hc) was increased with (Ag, C) segregants and the highest Hc is 18.3 kOe when x = 40. From cross-section images, the FePt layer are more continuous with 0 and 10 vol% (Ag, C) segregants and changed to an island structure when the (Ag, C) segregants increase to 20–40 vol %. The FePt grains were grown in separated islands in 20, 30 vol % (Ag, C) and changed to dense columnar-like morphology in 40 vol%. The second nucleated grains which contribute the in-plane magnetization are found in FePt (Ag, C) (40 vol %) film. The FePt islands are reached by inserting the ultrathin MgTiTaON layer and the island heights of FePt(Ag, C) (30, 40 vol %) are around 31–38 nm and the aspect ratios are 0.6–0.8.

scholarly journals Nonvolatile modulation of electronic structure and correlative magnetism of L10-FePt films using significant strain induced by shape memory substrates

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Chun Feng ◽  
Jiancheng Zhao ◽  
Feng Yang ◽  
Kui Gong ◽  
Shijie Hao ◽  
...  
Keyword(s):  
Shape Memory ◽  
Elastic Strain ◽  
Lattice Strain ◽  
Physical Nature ◽  
Strain Engineering ◽  
Strain Effect ◽  
Pure Strain ◽  
Electronic Density ◽  
Fept Film ◽  
Novel Approach

Abstract Tuning the lattice strain (εL) is a novel approach to manipulate the magnetic, electronic and transport properties of spintronic materials. Achievable εL in thin film samples induced by traditional ferroelectric or flexible substrates is usually volatile and well below 1%. Such limits in the tuning capability cannot meet the requirements for nonvolatile applications of spintronic materials. This study answers to the challenge of introducing significant amount of elastic strain in deposited thin films so that noticeable tuning of the spintronic characteristics can be realized. Based on subtle elastic strain engineering of depositing L10-FePt films on pre-stretched NiTi(Nb) shape memory alloy substrates, steerable and nonvolatile lattice strain up to 2.18% has been achieved in the L10-FePt films by thermally controlling the shape memory effect of the substrates. Introduced strains at this level significantly modify the electronic density of state, orbital overlap and spin-orbit coupling (SOC) strength in the FePt film, leading to nonvolatile modulation of magnetic anisotropy and magnetization reversal characteristics. This finding not only opens an efficient avenue for the nonvolatile tuning of SOC based magnetism and spintronic effects, but also helps to clarify the physical nature of pure strain effect.

scholarly journals Continuity of perpendicular FePt film with a compositional gradient design

2011 ◽  
Vol 266 ◽  
pp. 012040 ◽  
Author(s):  
X J Mo ◽  
H Xiang ◽  
W Lu ◽  
Y P Zheng ◽  
G Q Li ◽  
...  
Keyword(s):  
Compositional Gradient ◽  
Fept Film

scholarly journals Largely enhanced coercivity of FePt film at low temperature by introduction of CrRu underlayer

2007 ◽  
Vol 310 (2) ◽  
pp. e921-e923 ◽  
Author(s):  
S.C. Chen ◽  
P.C. Kuo ◽  
A.C. Sun ◽  
C.Y. Chou ◽  
Y.H. Fang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Fept Film
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