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Pb cation induced low-temperature crystallization of (Ba⋅Pb) hexa-ferrite thin films

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Abstract

We have studied the low-temperature crystallization of (Ba⋅Pb) hexa-ferrite thin films using real time synchrotron X-ray scattering, anomalous X-ray scattering, and vibrating sample magnetometer. The crystallization temperature of amorphous (Ba⋅Pb) hexa-ferrite film (300-Å-thick, ∼530∘C) was much lower than that of amorphous Ba hexa-ferrite film, ∼750∘C. The crystalline (Ba⋅Pb) hexa-ferrite phase was formed by solid phase transformation of the interfacial crystalline Fe3O4 phase through the diffusion of Ba or Pb cations. The low crystallization temperature of the (Ba⋅Pb) hexa-ferrite phase was due to the lower diffusion activation barrier of Pb cations than that of Ba cations. The small grain size (∼40 nm in diamter) and comparable magnetic properties (Ms ⊥: 337 emu/cm3, iHc ⊥ : 1.60 kOe) of the crystallized (Ba⋅Pb) hexa-ferrite film also demonstrate its potential possibility for high-density recording media.

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Authors and Affiliations

  1. Advanced Nano Materials Research Team, Daegu Gyeongbuk Institute of Science and Technology, Daegu, 700-742, Korea

    Seok Joo Doh

  2. Synchrotron X-ray Laboratory, Department of Materials Science and Engineering and Center for Information Materials, Pohang University of Science and Technology, Pohang, 790-784, Korea

    Jung Ho Je

  3. Department of Materials Science and Engineering, Sangju National University, Sangju, 742-711, Korea

    Tae Sik Cho

Authors
  1. Seok Joo Doh
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  2. Jung Ho Je
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  3. Tae Sik Cho
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Correspondence to Jung Ho Je.

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Doh, S.J., Je, J.H. & Cho, T.S. Pb cation induced low-temperature crystallization of (Ba⋅Pb) hexa-ferrite thin films. J Electroceram 17, 365–368 (2006). https://doi.org/10.1007/s10832-006-7239-7

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  • DOI: https://doi.org/10.1007/s10832-006-7239-7

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