Magnetic behaviors and multitransition temperatures in a nanoisland |
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| Institution: | 1. Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Ko?ice, Slovakia;2. Department of Theoretical Physics and Astrophysics, Faculty of Science, P. J. ?afárik University, Park Angelinum 9, 040 01 Ko?ice, Slovakia;3. Instituto de Fisica, Universidade Federal de Alagoas, 57072-970 Maceió, AL, Brazil;1. Department of Solid Mechanics and Design, Faculty of Mechanical Engineering, University Technology Malaysia – UTM, 81310 UTM Skudai, Johor, Malaysia;2. School of Engineering, Griffith University, Gold Coast Campus, Southport 4222, Australia;3. School of Engineering, The University of Newcastle, Callaghan, New South Wales 2308, Australia;1. Department of Theoretical Physics and Astrophysics, Faculty of Science, P.J. ?afárik University, Park Angelinum 9, 040 01 Ko?ice, Slovakia;2. Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Ko?ice, Slovakia;3. Instituto de Fisica, Universidade Federal de Alagoas, 57072-970 Maceió, AL, Brazil;1. Graphic Era University, Bell Road, Clement Town, Dehradun, India;2. Department of Electronic Science, University of Delhi South Campus, Benito Juarez Road, New Delhi 110021, India;3. School of Materials Science and Engineering, Gwangju Institute of Science Technology (GIST), Gwangju 500-712, Republic of Korea;4. Department of Physics, Gurukula Kangri University, Haridwar 249404, India;5. National Physical laboratory (NPL), New Delhi, India;6. School of Engineering & Technology, Sharda University, Greater Noida 201306, India;1. College of Physics and Information Technology, Shaanxi Normal University, Xian 710119, Shaanxi, PR China;2. Department of Medical Engineering and Technology, Xinjiang Medical University, Urumqi 830011, Xinjiang, PR China;3. College of Physics and Mechanical and Electronic Engineering, Xian University of Arts and Science, Xian 710065, Shaanxi, PR China;1. Institute of Materials Physics and Chemistry, College of Sciences, Northeastern University, Shenyang 110004, PR China;2. College of Sciences, Liaoning Shihua University, Fushun 113001, PR China;3. The Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110004, PR China |
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| Abstract: | A nanoisland consists of center spin-5/2 and perimeter spin-3/2 atoms, which is described by transverse Ising model with single-ion anisotropy. Magnetic behaviors of the nanoisland are studied by the effective-field theory with correlations and the differential operator technique. The formulas of the magnetization and the phase transition of the system are given. The numerical results of the phase transition, the magnetization, the initial susceptibility and the internal energy have been discussed. Some interesting phenomena, such as a new reentrant, are found. Namely there are multitransition temperatures dependent on competition among the single-ion anisotropies, the transverse field and the interlayer coupling. These results can provide some guidance to structure design in the nanoislands. |
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| Keywords: | Nanoisland Single-ion anisotropy Multitransition temperatures Magnetization |
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