Intergranular coupling and activation volume of Co-Ni ferrite thin films with high coercivity above 3 kOe

Kitamoto, Yoshitaka; Zhang, F.; Kantake, S.; Shirasaki, F.; Abe, Matanobu; Naoe, M.

doi:10.1109/20.800954

Cited by 4 publications

(1 citation statement)

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“…16 The magnetic properties, in particular due to its high Neel temperature (455-570 • C), 12,15,18 but also other properties of Fe 2 CoO 4 , Fe 1.5 Co 1.5 O 4 , and FeCo 2 O 4 are clearly of interest for various technological applications like spin-valve pinning layers, magnetostrictive sensors and composite-type oxygen permeable ceramic electrodes (see, e.g., ref. [19][20][21][22][23][24][25]. The present study also focuses attention on the possibility of influencing the ALDgrowth rate by application of an external magnetic field as earlier reported 26 by the authors for growth of a-Fe 2 O 3 .…”

Section: Introductionmentioning

confidence: 79%

Growth of iron cobaltoxides by atomic layer deposition

et al. 2008

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Thin films of iron cobalt oxides with spinel-type structure are made by the atomic layer deposition (ALD) technique using Fe(thd)3 (Hthd = 2,2,6,6-tetramethylheptane-3,5-dione), Co(thd)2, and ozone as precursors. Pulse parameters for ALD-type growth are established and such growth can be achieved at deposition temperatures between 185 and 310 degrees C. Films have been deposited on amorphous soda-lime glass and single-crystalline substrates of Si(100), MgO(100), and alpha-Al2O3(001) which all provide crystalline films, but with various orientations and crystallite sizes. Application of an external magnetic field during the film growth does not influence film growth characteristics (growth rate, crystallinity, topography etc.). Magnetization data are reported for phase-pure films of spinel-type structure with composition Fe2CoO4.

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