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The stabilities and the thermal dynamical properties of the three high-pressure phases of Ba (Ba-I, Ba-Ⅱ and Ba-V ) are investigated systemically by first principles method. Our results show that all the three phase meet the criteria of mechanical and dynamical stabilities at 0 K. With pressure increasing, the phonon frequencies in Ba-I and Ba-Ⅱ phases become softened, whereas the Ba-V phase exhibits the hardening of phonon frequencies. Although both Ba-Ⅱ and Ba-V phase are the same hcp structures, they show different elastic anisotropies under high pressure. We also find that Ba-Ⅱ phase at higher pressure still meets the mechanical stability criterion, but does not meet the dynamical stability criterion. The absence of dynamical stability may be the reason for the transition from Ba-Ⅱ phase to Ba-I!V phase. We also calculate and make comparisons of sound velocity, Debye temperature, bulk modulus and shear modulus etc between Ba-Ⅱ and Ba-V phases, showing that Ba possesses the thermal dynamical properties under high pressure.
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Keywords:
- Ba /
- high pressure /
- phonon curve /
- elastic constant
[1] Zeng W X, Heinez V, Jepseny O 1997 J. Phys.: Condens. Matter 9 3489
[2] Skriver H L 1982 Phys. Rev. Lett. 49 1768
[3] Skriver H L 1985 Phys. Rev. B 31 1909
[4] Moriarty J A 1986 Phys. Rev. B 34 6738
[5] Olijnyk H, Holzapfel W B 1984 Phys. Lett. A 100 191
[6] Kenichi T 1994 Phys. Rev. B 50 16238
[7] Buzea C, Robbie K 2005 Supercond. Sci. Technol. 18 R1
[8] Tian F B, Wang J H, He Z, Ma Y M, Wang L C, Cui T, Chen C B, Liu B B, Zou G T 2008 Phys. Rev. B 78 235431
[9] Jin X L, Meng X, He Z, Ma Y M, Liu B B, Cui T, Zou G T, Mao H K 2010 Proc. Natl. Acad. Sci. USA 107 9969
[10] Xu Y, Tse J S, Oganov A R, Cui T, Wang H, Ma Y M, Zou G T 2009 Phys. Rev. B 79 144110
[11] Gao G Y, Oganov A R, Bergara A, Martinez-Canales M, Cui T, Iitaka T, Ma Y M, Zou G T 2008 Phys. Rev. Lett. 101 107002
[12] Gao G Y, Oganov A R, Li P F, Li Z W, Wang H, Cui T, Ma Y M, Bergara A, Lyakhov A O, Iitaka T, Zou G T 2010 Proc. Natl. Acad. Sci. USA 107 1317
[13] Li Y W, Gao G Y, Xie Y, Ma Y M, Cui T, Zou G T 2010 Proc. Natl. Acad. Sci. USA 107 15708
[14] Moodenbaugh A R, Wittig J 1973 J. Low Temperat. Phys. 10 203
[15] Dunn K J, Bundy F P 1982 Phys. Rev. B 25 194
[16] Witting J, Matthias B T 1969 Phys. Rev. Lett. 22 634
[17] Dunn K J, Bundy F P 1981 Phys. Rev. B 24 1643
[18] Sakata M, Nakamoto Y, Shimizu K, Matsuoka T, Ohishi Y 2011 Phys. Rev. B 83 220512(R)
[19] Zheng H F 2002 J. Phys.: Condens. Matter 14 5129
[20] Jona F, Marcus P M 2006 J. Phys.: Condens. Matter 18 4623
[21] Belger D, Hüsges Z, Voloshina E, Paulus B 2010 J. Phys.: Condens. Matter 22 275504
[22] Jona F, Marcus P M 2008 Europhys. Lett. 74 83
[23] Baroni S, Dal Corso A, de Gironcoli S, Giannozzi P, Cavazzoni C, Ballabio G, Scandolo S, Chiarotti G, Focher P, Pasquarello A, Laasonen K, Trave A, Car R, Marzari N, Kokalj A 2011 http: // www. pwscf. org/ [2011. 11. 19]
[24] Troullier N, Martins J L 1991 Phys. Rev. B 43 1993
[25] Perdew P J, Chevary A J , Vosko H S, Jackson A K, Pedersen R M, Singh J D, Fiolhais 1992 Phys. Rev. B 46 6671
[26] Monnkhorst H J, Pack J D 1976 Phys. Rev. B 13 5188
[27] Nielsen O H, Martin R M 1985 Phys. Rev. B 32 3792
[28] Milman V, Warren M C 2001 J. Phys.: Condens. Matter 13 241
[29] Sinpko G V, Smirnow N A 2002 J. Phys.: Condens. Matter 14 6989
[30] Nelmes R J, Allan D R, McMahon M I, Belmonte S A 1999 Phys. Rev. Lett. 83 4081
[31] Reed S K, Ackland G 2000 J. Phys. Rev. Lett. 84 5580
[32] Liu Z M, Cui T, Ma Y M, Liu B B, Zou G T 2007 Acta Phys. Sin. 56 4877 (in Chinese) [刘志明, 崔田, 马琰铭, 刘冰冰, 邹广田 2005 56 4877]
[33] Yuan P F, Zhu W J, Xu J A, Liu S J, Jing F Q 2010 Acta Phys. Sin. 59 8755 (in Chinese) [原鹏飞, 祝文军, 徐济安, 刘绍军, 经福谦 2010 59 8755]
[34] Miao R D, Tian M, Huang G Q 2008 Acta Phys. Sin. 57 3709 (in Chinese) [苗仁德, 田苗, 黄桂芹 2008 57 3709]
[35] Xin X G, Chen X, Zhou J J, Shi S Q 2011 Acta Phys. Sin. 60 028201 (in Chinese) [忻晓桂, 陈香, 周晶晶, 施思齐 2008 60 028201]
[36] Sinko G V, Smirnow N A 2002 J. Phys.: Condens. Matter 14 6989
[37] Anderson O L 1963 J. Phys. Chem. Solids 24 909
[38] Schreiber E, Anderson O L, Soga N 1973 Elastic Constants and Their Measurements (NewYork: McGraw-Hill)
[39] Hill R 1952 Phys. Soc. London 65 350
[40] Deng X H, Lu W, Hu Y M, Gu H S 2009 Physica B 404 1218
[41] Ravindran P, Fast L, Korzhavyi P A, Johansson B, Wills J, Eriksson O 1998 J. Appl. Phys. 84 4891
[42] Lindemann F R 1910 Z. Phys. 11 609
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[1] Zeng W X, Heinez V, Jepseny O 1997 J. Phys.: Condens. Matter 9 3489
[2] Skriver H L 1982 Phys. Rev. Lett. 49 1768
[3] Skriver H L 1985 Phys. Rev. B 31 1909
[4] Moriarty J A 1986 Phys. Rev. B 34 6738
[5] Olijnyk H, Holzapfel W B 1984 Phys. Lett. A 100 191
[6] Kenichi T 1994 Phys. Rev. B 50 16238
[7] Buzea C, Robbie K 2005 Supercond. Sci. Technol. 18 R1
[8] Tian F B, Wang J H, He Z, Ma Y M, Wang L C, Cui T, Chen C B, Liu B B, Zou G T 2008 Phys. Rev. B 78 235431
[9] Jin X L, Meng X, He Z, Ma Y M, Liu B B, Cui T, Zou G T, Mao H K 2010 Proc. Natl. Acad. Sci. USA 107 9969
[10] Xu Y, Tse J S, Oganov A R, Cui T, Wang H, Ma Y M, Zou G T 2009 Phys. Rev. B 79 144110
[11] Gao G Y, Oganov A R, Bergara A, Martinez-Canales M, Cui T, Iitaka T, Ma Y M, Zou G T 2008 Phys. Rev. Lett. 101 107002
[12] Gao G Y, Oganov A R, Li P F, Li Z W, Wang H, Cui T, Ma Y M, Bergara A, Lyakhov A O, Iitaka T, Zou G T 2010 Proc. Natl. Acad. Sci. USA 107 1317
[13] Li Y W, Gao G Y, Xie Y, Ma Y M, Cui T, Zou G T 2010 Proc. Natl. Acad. Sci. USA 107 15708
[14] Moodenbaugh A R, Wittig J 1973 J. Low Temperat. Phys. 10 203
[15] Dunn K J, Bundy F P 1982 Phys. Rev. B 25 194
[16] Witting J, Matthias B T 1969 Phys. Rev. Lett. 22 634
[17] Dunn K J, Bundy F P 1981 Phys. Rev. B 24 1643
[18] Sakata M, Nakamoto Y, Shimizu K, Matsuoka T, Ohishi Y 2011 Phys. Rev. B 83 220512(R)
[19] Zheng H F 2002 J. Phys.: Condens. Matter 14 5129
[20] Jona F, Marcus P M 2006 J. Phys.: Condens. Matter 18 4623
[21] Belger D, Hüsges Z, Voloshina E, Paulus B 2010 J. Phys.: Condens. Matter 22 275504
[22] Jona F, Marcus P M 2008 Europhys. Lett. 74 83
[23] Baroni S, Dal Corso A, de Gironcoli S, Giannozzi P, Cavazzoni C, Ballabio G, Scandolo S, Chiarotti G, Focher P, Pasquarello A, Laasonen K, Trave A, Car R, Marzari N, Kokalj A 2011 http: // www. pwscf. org/ [2011. 11. 19]
[24] Troullier N, Martins J L 1991 Phys. Rev. B 43 1993
[25] Perdew P J, Chevary A J , Vosko H S, Jackson A K, Pedersen R M, Singh J D, Fiolhais 1992 Phys. Rev. B 46 6671
[26] Monnkhorst H J, Pack J D 1976 Phys. Rev. B 13 5188
[27] Nielsen O H, Martin R M 1985 Phys. Rev. B 32 3792
[28] Milman V, Warren M C 2001 J. Phys.: Condens. Matter 13 241
[29] Sinpko G V, Smirnow N A 2002 J. Phys.: Condens. Matter 14 6989
[30] Nelmes R J, Allan D R, McMahon M I, Belmonte S A 1999 Phys. Rev. Lett. 83 4081
[31] Reed S K, Ackland G 2000 J. Phys. Rev. Lett. 84 5580
[32] Liu Z M, Cui T, Ma Y M, Liu B B, Zou G T 2007 Acta Phys. Sin. 56 4877 (in Chinese) [刘志明, 崔田, 马琰铭, 刘冰冰, 邹广田 2005 56 4877]
[33] Yuan P F, Zhu W J, Xu J A, Liu S J, Jing F Q 2010 Acta Phys. Sin. 59 8755 (in Chinese) [原鹏飞, 祝文军, 徐济安, 刘绍军, 经福谦 2010 59 8755]
[34] Miao R D, Tian M, Huang G Q 2008 Acta Phys. Sin. 57 3709 (in Chinese) [苗仁德, 田苗, 黄桂芹 2008 57 3709]
[35] Xin X G, Chen X, Zhou J J, Shi S Q 2011 Acta Phys. Sin. 60 028201 (in Chinese) [忻晓桂, 陈香, 周晶晶, 施思齐 2008 60 028201]
[36] Sinko G V, Smirnow N A 2002 J. Phys.: Condens. Matter 14 6989
[37] Anderson O L 1963 J. Phys. Chem. Solids 24 909
[38] Schreiber E, Anderson O L, Soga N 1973 Elastic Constants and Their Measurements (NewYork: McGraw-Hill)
[39] Hill R 1952 Phys. Soc. London 65 350
[40] Deng X H, Lu W, Hu Y M, Gu H S 2009 Physica B 404 1218
[41] Ravindran P, Fast L, Korzhavyi P A, Johansson B, Wills J, Eriksson O 1998 J. Appl. Phys. 84 4891
[42] Lindemann F R 1910 Z. Phys. 11 609
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