Surface patterns of tetragonal phase FePt thin films from Pt@Fe 2O3 core-shell nanoparticles using combined Langmuir-Blodgett and soft lithographic techniques

Qijie Guo; Xiaowei Teng; Hong Yang

doi:10.1557/proc-776-q10.7

Surface patterns of tetragonal phase FePt thin films from Pt@Fe ₂O₃ core-shell nanoparticles using combined Langmuir-Blodgett and soft lithographic techniques

Qijie Guo, Xiaowei Teng, Hong Yang

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present the fabrication of micron-sized patterns of FePt thin films from Pt@Fe₂O₃ core-shell nanoparticles. In a typical procedure, Pt@Fe₂O₃ core-shell nanoparticles were spread and formed a Langmuir film using water as the subphase. This film was lifted onto polydimethylsiloxane (PDMS) stamps with micron-sized patterns of lines, dots and wells, and transferred onto silicon wafers using microcontact printing (μ-CP). The patterns of Pt@Fe₂O₃ core-shell nanoparticles were converted into face-centered tetragonal phase FePt alloy at enhanced temperatures in the presence of 5% hydrogen. Scanning electron microscopy (SEM), atomic force microscopy (AFM), powder X-ray diffraction (PXRD) and superconducting quantum interference device (SQUID) magnetometer were used to characterize the patterns and the properties of the final FePt alloy films.

Original language	English (US)
Pages (from-to)	187-192
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	776
DOIs	https://doi.org/10.1557/proc-776-q10.7
State	Published - 2003
Externally published	Yes
Event	Unconventional Approaches to Nanostructures with Applications in Electronics, Photonics, Information Storage and Sensing - San Francisco, CA, United States Duration: Apr 21 2003 → Apr 25 2003

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Online availability

10.1557/proc-776-q10.7

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Cite this

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title = "Surface patterns of tetragonal phase FePt thin films from Pt@Fe 2O3 core-shell nanoparticles using combined Langmuir-Blodgett and soft lithographic techniques",

abstract = "We present the fabrication of micron-sized patterns of FePt thin films from Pt@Fe2O3 core-shell nanoparticles. In a typical procedure, Pt@Fe2O3 core-shell nanoparticles were spread and formed a Langmuir film using water as the subphase. This film was lifted onto polydimethylsiloxane (PDMS) stamps with micron-sized patterns of lines, dots and wells, and transferred onto silicon wafers using microcontact printing (μ-CP). The patterns of Pt@Fe2O3 core-shell nanoparticles were converted into face-centered tetragonal phase FePt alloy at enhanced temperatures in the presence of 5% hydrogen. Scanning electron microscopy (SEM), atomic force microscopy (AFM), powder X-ray diffraction (PXRD) and superconducting quantum interference device (SQUID) magnetometer were used to characterize the patterns and the properties of the final FePt alloy films.",

author = "Qijie Guo and Xiaowei Teng and Hong Yang",

year = "2003",

doi = "10.1557/proc-776-q10.7",

language = "English (US)",

volume = "776",

pages = "187--192",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Unconventional Approaches to Nanostructures with Applications in Electronics, Photonics, Information Storage and Sensing ; Conference date: 21-04-2003 Through 25-04-2003",

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AU - Guo, Qijie

AU - Teng, Xiaowei

AU - Yang, Hong

PY - 2003

Y1 - 2003

N2 - We present the fabrication of micron-sized patterns of FePt thin films from Pt@Fe2O3 core-shell nanoparticles. In a typical procedure, Pt@Fe2O3 core-shell nanoparticles were spread and formed a Langmuir film using water as the subphase. This film was lifted onto polydimethylsiloxane (PDMS) stamps with micron-sized patterns of lines, dots and wells, and transferred onto silicon wafers using microcontact printing (μ-CP). The patterns of Pt@Fe2O3 core-shell nanoparticles were converted into face-centered tetragonal phase FePt alloy at enhanced temperatures in the presence of 5% hydrogen. Scanning electron microscopy (SEM), atomic force microscopy (AFM), powder X-ray diffraction (PXRD) and superconducting quantum interference device (SQUID) magnetometer were used to characterize the patterns and the properties of the final FePt alloy films.

AB - We present the fabrication of micron-sized patterns of FePt thin films from Pt@Fe2O3 core-shell nanoparticles. In a typical procedure, Pt@Fe2O3 core-shell nanoparticles were spread and formed a Langmuir film using water as the subphase. This film was lifted onto polydimethylsiloxane (PDMS) stamps with micron-sized patterns of lines, dots and wells, and transferred onto silicon wafers using microcontact printing (μ-CP). The patterns of Pt@Fe2O3 core-shell nanoparticles were converted into face-centered tetragonal phase FePt alloy at enhanced temperatures in the presence of 5% hydrogen. Scanning electron microscopy (SEM), atomic force microscopy (AFM), powder X-ray diffraction (PXRD) and superconducting quantum interference device (SQUID) magnetometer were used to characterize the patterns and the properties of the final FePt alloy films.

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