Finite-size scaling behavior of ferromagnetic thin films

Huang, Fujian; Mankey, G. J.; Kief, M. T.; Willis, R. F.

doi:10.1063/1.352477

Cited by 130 publications

(103 citation statements)

References 26 publications

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“…In the past decades, a lot of effort has been put into the research of magnetic materials, including finite size scaling of ferromagnetism in thin films (see, e.g., Refs. [29][30][31]). These materials require a supporting substrate to ensure structural stability.…”

Section: Gpa (W/o Vdw)mentioning

confidence: 99%

Ferromagnetic two-dimensional crystals: Single layers of K2CuF4

et al. 2013

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The successful isolation of graphene ten years ago has evoked a rapidly growing scientific interest in the nature of two-dimensional (2D) crystals. A number of different 2D crystals has been produced since then, with properties ranging from superconductivity to insulating behavior. Here, we predict the possibility for realizing ferromagnetic 2D crystals by exfoliating atomically thin films of K2CuF4. From a first-principles theoretical analysis, we find that single layers of K2CuF4 form exactly 2D Kosterlitz-Thouless systems. The 2D crystal can form a free-standing membrane, and exhibits an experimentally accessible transition temperature and robust magnetic moments of 1µB per formula unit. 2D K2CuF4 unites ferromagnetic and insulating properties and is a demonstration of principles for nanoelectronics such as novel 2D-based heterostructures.Introduction The large variety of two-dimensional (2D) atomic crystals which are available to us [1, 2] comprise into a very rich class of materials, which collectively covers a large diversity of properties. Also, the recent progress in creating heterostructures made from individual atomic crystals [3][4][5] allowed the investigation of such phenomena as Coulomb drag [6] and the Hofstadter butterfly [7][8][9], but also facilitated the creation of novel, often multifunctional devices, such as tunneling transistors [10,11] and photovoltaic devices [12][13][14].

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Section: Gpa (W/o Vdw)mentioning

confidence: 99%

Ferromagnetic two-dimensional crystals: Single layers of K2CuF4

et al. 2013

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“…(39) was modified by replacing the reference T C (N) with the K j -dependent T C (K j ) for normalization [335,358]:…”

Section: Observationsmentioning

confidence: 99%

Size dependence of nanostructures: Impact of bond order deficiency

Sun

2007

Progress in Solid State Chemistry

826

717

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“…In addition, another theoretical model, a finite-size scaling relationship [100,101], has also been proposed for reproducing T c (D) functions of Co/Ni alloys,…”

Section: Theoretical Modelsmentioning

confidence: 99%

Size Dependence of Structures and Properties of Magnetic Materials

Jiang¹,

Lang²

2007

TONANOJ

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Due to the involvement of high portion of atomic coordination imperfection in surfaces and interfaces, the properties of magnetic nanocrystals dramatically differ from that of the corresponding bulk counterparts, which have led to a surge in both experimental and theoretical investigations in the past decades. This review summarizes the studies for these size-dependent magnetic properties, and additional thermal or phase stabilities, and mechanical properties. To interpret the above phenomena, a thermodynamic model for the size dependence and interface dependences of these properties is described, which is based on Lindemann s criterion for melting, Mott s expression for the vibrational melting entropy, and Shi s model for the size-dependent melting temperature. The model without any adjustable parameter is confirmed by a large number of experimental results, and helps us to understand the structures and properties of the magnetic nanocrystals. Moreover, other theoretical works on the above properties are also mentioned and commented.

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Finite-size scaling behavior of ferromagnetic thin films

Cited by 130 publications

References 26 publications

Ferromagnetic two-dimensional crystals: Single layers of K2CuF4

Ferromagnetic two-dimensional crystals: Single layers of K2CuF4

Size dependence of nanostructures: Impact of bond order deficiency

Size Dependence of Structures and Properties of Magnetic Materials

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