CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Prev
Next
|
|
|
Electronic structures and optical properties of HfO2-TiO2 alloys studied by first-principles GGA+ U approach |
Jin-Ping Li(李金平)1, Song-He Meng(孟松鹤)1, Cheng Yang(杨程)1, Han-Tao Lu(陆汉涛)2, Takami Tohyama(遠山貴巳)3 |
1. Center for Composite Materials and Structure, Harbin Institute of Technology, Harbin 150080, China; 2. Center for Interdisciplinary Studies & Key Laboratory for Magnetism and Magnetic Materials of the MoE, Lanzhou University, Lanzhou 730000, China; 3. Department of Applied Physics, Tokyo University of Science, Tokyo 125-8585, Japan |
|
|
Abstract The phase diagram of HfO2-TiO2 system shows that when Ti content is less than 33.0 mol%, HfO2-TiO2 system is monoclinic; when Ti content increases from 33.0 mol% to 52.0 mol%, it is orthorhombic; when Ti content reaches more than 52.0 mol%, it presents rutile phase. So, we choose the three phases of HfO2-TiO2 alloys with different Ti content values. The electronic structures and optical properties of monoclinic, orthorhombic and rutile phases of HfO2-TiO2 alloys are obtained by the first-principles generalized gradient approximation (GGA)+U approach, and the effects of Ti content and crystal structure on the electronic structures and optical properties of HfO2-TiO2 alloys are investigated. By introducing the Coulomb interactions of 5d orbitals on Hf atom (U1d), those of 3d orbitals on Ti atom (U2d), and those of 2p orbitals on O atom (Up) simultaneously, we can improve the calculation values of the band gaps, where U1d, U2d, and Up values are 8.0 eV, 7.0 eV, and 6.0 eV for both the monoclinic phase and orthorhombic phase, and 8.0 eV, 7.0 eV, and 3.5 eV for the rutile phase. The electronic structures and optical properties of the HfO2-TiO2 alloys calculated by GGA+U1d (U1d=8.0 eV)+U2d (U2d=7.0 eV)+Up (Up=6.0 eV or 3.5 eV) are compared with available experimental results.
|
Received: 29 August 2017
Revised: 05 November 2017
Accepted manuscript online:
|
PACS:
|
71.15.-m
|
(Methods of electronic structure calculations)
|
|
71.15.Mb
|
(Density functional theory, local density approximation, gradient and other corrections)
|
|
78.20.Ci
|
(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
|
|
78.20.Fm
|
(Birefringence)
|
|
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11672087, 11502058, and 11402252). |
Corresponding Authors:
Jin-Ping Li
E-mail: lijinping@hit.edu.cn
|
About author: 71.15.-m; 71.15.Mb; 78.20.Ci; 78.20.Fm |
Cite this article:
Jin-Ping Li(李金平), Song-He Meng(孟松鹤), Cheng Yang(杨程), Han-Tao Lu(陆汉涛), Takami Tohyama(遠山貴巳) Electronic structures and optical properties of HfO2-TiO2 alloys studied by first-principles GGA+ U approach 2018 Chin. Phys. B 27 027101
|
[1] |
Qian T, Kueltzo A, Manish S, Jursich G and Takoudis C G 2011 J. Electrochem. Soc. 158 G27
|
[2] |
Errandonea D, Santamaria-Perez D, Bondarenko T and Khyzhun O 2010 Mater. Res. Bull. 45 1732
|
[3] |
Coutures J P and Coutures J 1987 J. Am. Ceram. Soc. 70 383
|
[4] |
Mazdiyasni K S and Brown L M 1970 J. Am. Ceram. Soc. 53 585
|
[5] |
Yamamoto A, Yamada T, Ikawa H, Fukunaga O, Tanaka K and Marumo F 1991 Acta Cryst. C 47 1588
|
[6] |
Seo M, Kim S K, Min Y S and Hwang C S 2011 J. Mater. Chem. 21 18497
|
[7] |
Krebs M A and Sr R A C 1988 J. Mater. Sci. Lett. 7 1327
|
[8] |
Cisneros-Morales M C and Aita C R 2008 Appl. Phys. Lett. 93 021915
|
[9] |
Popovici M, Delabie A, Elshocht S V, Clima S, Pourtois G, Nyns L, Tomida K, Menou N, Opsomer K, Swerts J, Detavernier C, Wouters D, and Kittla J A 2009 J. Electrochem. Soc. 156 G145
|
[10] |
Triyoso D H, Hegde R I, Zollner S, Ramon M E, Kalpat S, Gregory R, Wang X D, Jiang J, Raymond M, Rai R, Werho D, Roan D, White B E Jr and Tobin P J 2005 J. Appl. Phys. 98 054104
|
[11] |
Mazur M, Wojcieszak D, Domaradzki J, Kaczmarek D, Poniedzialek A, and Domanowski P 2015 Mater. Res. Bull. 72 116
|
[12] |
Loschen C, Carrasco J, Neyman K M and Illas F 2007 Phys. Rev. B 75 035115
|
[13] |
Li J P, Han J C, Meng S H, Lu H T and Tohyama T 2013 Appl. Phys. Lett. 103 071916
|
[14] |
Li J P, Meng S H, Qin L Y and Lu H T 2017 Chin. Phys. B 26 087101
|
[15] |
Segall M D, Lindan P J D, Probert M J, Pickard C J, Hasnip P J, Clark S J and Payne M C 2002 J. Phys.:Condens. Matter 14 2717
|
[16] |
Asahi R, Taga Y, Mannstadt W and Freeman A J 2000 Phys. Rev. B 61 7459
|
[17] |
Choi H, Stathatos E and Dionysiou D D 2006 Appl. Catal. B:Environ. 63 60
|
[18] |
Cromer D T and Herrington K 1955 J. Am. Chem. Soc. 77 4708
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|