Preparation and magnetic properties of highly coercive FePt films

T. Shima; K. Takanashi; Y. K. Takahashi; K. Hono

doi:10.1063/1.1498504

Preparation and magnetic properties of highly coercive FePt films

T. Shima^*, K. Takanashi, Y. K. Takahashi, K. Hono

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

148 Citations (Scopus)

Abstract

The magnetization processes of highly ordered FePt(001) films with large perpendicular magnetic anisotropy have been studied. The film morphology was controlled from isolated particles to continuous film by varying the nominal thickness (t_N) of the FePt film sputter deposited directly on a MgO(001) substrate at an elevated temperature. A drastic change in the coercivity by one order of magnitude has been found at the critical thickness (t_N=45nm) where the film morphology changes from a particulate to a continuous state. A huge coercivity exceeding 40 kOe has been achieved in the film with t_N=10nm, which comprises single domain particles with an average lateral size of approximately 50 nm.

Original language	English
Pages (from-to)	1050-1052
Number of pages	3
Journal	Applied Physics Letters
Volume	81
Issue number	6
DOIs	https://doi.org/10.1063/1.1498504
Publication status	Published - 2002 Aug 5
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "The magnetization processes of highly ordered FePt(001) films with large perpendicular magnetic anisotropy have been studied. The film morphology was controlled from isolated particles to continuous film by varying the nominal thickness (tN) of the FePt film sputter deposited directly on a MgO(001) substrate at an elevated temperature. A drastic change in the coercivity by one order of magnitude has been found at the critical thickness (tN=45nm) where the film morphology changes from a particulate to a continuous state. A huge coercivity exceeding 40 kOe has been achieved in the film with tN=10nm, which comprises single domain particles with an average lateral size of approximately 50 nm.",

author = "T. Shima and K. Takanashi and Takahashi, {Y. K.} and K. Hono",

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AU - Shima, T.

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AU - Takahashi, Y. K.

AU - Hono, K.

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N2 - The magnetization processes of highly ordered FePt(001) films with large perpendicular magnetic anisotropy have been studied. The film morphology was controlled from isolated particles to continuous film by varying the nominal thickness (tN) of the FePt film sputter deposited directly on a MgO(001) substrate at an elevated temperature. A drastic change in the coercivity by one order of magnitude has been found at the critical thickness (tN=45nm) where the film morphology changes from a particulate to a continuous state. A huge coercivity exceeding 40 kOe has been achieved in the film with tN=10nm, which comprises single domain particles with an average lateral size of approximately 50 nm.

AB - The magnetization processes of highly ordered FePt(001) films with large perpendicular magnetic anisotropy have been studied. The film morphology was controlled from isolated particles to continuous film by varying the nominal thickness (tN) of the FePt film sputter deposited directly on a MgO(001) substrate at an elevated temperature. A drastic change in the coercivity by one order of magnitude has been found at the critical thickness (tN=45nm) where the film morphology changes from a particulate to a continuous state. A huge coercivity exceeding 40 kOe has been achieved in the film with tN=10nm, which comprises single domain particles with an average lateral size of approximately 50 nm.

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Preparation and magnetic properties of highly coercive FePt films

Abstract

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