TITLE

Low-temperature ordering of FePt thin films by a thin AuCu underlayer

AUTHOR(S)
Yun Zhu; Cai, J. W.
PUB. DATE
July 2005
SOURCE
Applied Physics Letters;7/18/2005, Vol. 87 Issue 3, p032504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have studied the magnetic and structural properties of AuCu(0–50 nm)/FePt(2–50 nm) films after annealing at various temperatures. The results indicate that, by introducing a thin equiatomic AuCu underlayer, the ordering temperature of FePt films with thickness even down to 5 nm can be significantly reduced to 350 °C, at which a large coercivity is developed. In fact, the coercivity is as high as 4.6 kOe for a 5 nm FePt film on a 10 nm AuCu underlayer after annealing at 350 °C and this value is raised up to 7.5 kOe when annealed at 400 °C, while the corresponding sample without a AuCu underlayer has to be annealed at a temperature beyond 600 °C in order to achieve a coercivity of 4 kOe. The ordering of the thin AuCu film at relatively low temperature and thus coherently inducing the ordering of FePt film led to the formation of the ordered FePt phase at a much lowered temperature.
ACCESSION #
18008242

 

Related Articles

  • The Influence of the Different Input Power and Heat Treatment on Structural and Magnetic Properties of Ag73Co27 Magnetic Thin Films. Abdullah, H.; Halim, S. A. // European Journal of Scientific Research;Apr2009, Vol. 29 Issue 3, p388 

    73% Ag ~ 27% Co film were deposited onto (100) Si substrate via radio frequency (RF) magnetron sputtering. The influence of RF input power on magnetic and structural properties of films was investigated. The XRD spectra show that a set of (111), (200), (220) and (311) peaks were observed. X-ray...

  • Dissolution of metal precipitates in multicrystalline silicon during annealing and the protective effect of phosphorus emitters. Tan, J.; Macdonald, D.; Bennett, N.; Kong, D.; Cuevas, A.; Romijn, I. // Applied Physics Letters;7/23/2007, Vol. 91 Issue 4, p043505 

    The degradation of the carrier lifetime in multicrystalline silicon due to the dissolution of metal precipitates during high temperature annealing is well known. This letter presents evidence indicating that the presence of phosphorus emitters during annealing can help reduce this...

  • FePtCu alloy thin films: Morphology, L10 chemical ordering, and perpendicular magnetic anisotropy. Brombacher, C.; Schletter, H.; Daniel, M.; Matthes, P.; Jöhrmann, N.; Maret, M.; Makarov, D.; Hietschold, M.; Albrecht, M. // Journal of Applied Physics;Oct2012, Vol. 112 Issue 7, p073912 

    Rapid thermal annealing was applied to transform sputter-deposited Fe51Pt49/Cu bilayers into L10 chemically ordered ternary (Fe51Pt49)100-xCux alloys with (001) texture on amorphous SiO2/Si substrates. It was found that for thin film samples, which were processed at 600 °C for 30 s, the...

  • Influence of the annealing atmosphere on the structural properties of FePt thin films. Vladymyrskyi, I. A.; Karpets, M. V.; Ganss, F.; Katona, G. L.; Beke, D. L.; Sidorenko, S. I.; Nagata, T.; Nabatame, T.; Chikyow, T.; Beddies, G.; Albrecht, M.; Makogon, Iu. M. // Journal of Applied Physics;Oct2013, Vol. 114 Issue 16, p164314 

    FePt thin films with a thickness of 30 nm were deposited by dc magnetron sputtering at room temperature onto SiO2(100 nm)/Si(100) substrates. These films were post-annealed in a temperature range of 500 °C to 900 °C for 30 s in three different atmospheres-N2, Ar, and forming gas (Ar+H2 (3...

  • Effect of annealing process of iron powder on magnetic properties and losses of motor cores. Yin, Fuzheng; Yang, Haibo; Tian, Jianjun; Pan, De-An; Wang, Jian; Zhang, Shengen // Bulletin of Materials Science;2011, Vol. 34 Issue 4, p829 

    Iron powder magnetic cores are used as soft magnetic rotors, in micro special motors such as BS brake motors, refrigerator compressor motors and brushless servo motors. Heat treatment of iron powder played an important role in the magnetic properties and loss of the motor cores. After the...

  • Trapping Time Characteristics of Carriers in a-InGaZnO Thin-Film Transistors Fabricated at Low Temperatures for Next-Generation Displays. Dao, Vinh; Trinh, Thanh; Jang, Kyungsoo; Ryu, Kyungyul; Yi, Junsin // Journal of Electronic Materials;Apr2013, Vol. 42 Issue 4, p711 

    The effect of low-temperature annealing treatment for various durations on the stability of amorphous indium gallium zinc oxide (a-IGZO) thin-film transistors was investigated. By this treatment, IGZO TFTs showed enhanced electrical characteristics and better stability under positive gate bias...

  • Effect of interface on the properties of Ti/NiFe thin films. Li, Shuxiang; Yan, Minglang; Yu, Chengtao; Lai, Wuyan // Journal of Applied Physics;5/15/1994, Vol. 75 Issue 10, p6504 

    Presents information on a study which investigated the effect of annealing temperature on the microstructure, anisotropic magnetoresistance and magnetic properties of titanium/nickel iron (NiFe) thin films. Importance of the polycrystalline NiFe thin film; Experimental procedure; Results and...

  • Thermal annealing study of exchange-biased NiFe-FeMn films. Toney, Michael F.; Tsang, Ching; Kent Howard, J. // Journal of Applied Physics;11/15/1991, Vol. 70 Issue 10, p6227 

    Focuses on a study which investigated the effects of thermal annealing on the magnetic and interface properties of exchange-biased nickel iron/iron manganese thin film couples. Description of the crater edge depth profiles of the deposited and annealed films; Temperature dependence of annealed...

  • Phase formation and magnetic properties of SmFe[sub 7]N[sub x]+αFe composite thin films. Song, J. M.; Nakano, M.; Ogawa, N.; Fukunaga, H. // Journal of Applied Physics;5/1/2000, Vol. 87 Issue 9, p6585 

    Sm(Zr)Fe[sub 7]N[sub x]+αFe composite thin films were prepared on various substrates with differing values of thermal expansion from Sm[sub x]Fe[sub bal]Zr[sub y] (11.3≤x≤17.8,0≤y≤3.2) targets by the rf sputtering method followed by annealing and nitrogenation. Their...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics