Phase transition in CeSe, EuSe and LaSe under high pressure

• Autorzy: Sadhna Singh , R. Singh , Atul Gour
• Języki publikacji: EN

Abstrakty

EN

The high pressure phase transition and elastic behavior of rare earth monoselenides (CeSe, EuSe and LaSe) which crystallize in a NaCl-structure have been investigated using the three body interaction potential (TBIP) approach. These interactions arise due to the electronshell deformation of the overlapping ions in crystals. The TBP model consists of a long range Coulomb, three body interactions and the short range overlap repulsive forces operative up to the second neighboring ions. The authors of this paper estimated the values of the phase transition pressure and the associated volume collapse to be closer than other calculations. Thus, the TBIP approach also promises to predict the phase transition pressure and pressure variations of elastic constants of lanthanide compounds.

Słowa kluczowe

EN

Phase transition; transition pressure; three body interaction; elastic constants; Gibbs free energy

• Czasopismo: Open Physics
• Rocznik: 2007
• Tom: 5
• Numer: 4
• Strony: 576-585

Daty

wydano

2007-12-01

online

2007-12-01

Twórcy

autor

Sadhna Singh

• Gas Rahat Building Govindpura Bhopal, Madhya Pradesh. Bhoj (Open) University, 462016, India,

autor

R. Singh

• Institute of Professional and Scientific Studies and Research, Chaudhary Devi Lal University, Sirsa, 125055, India

autor

Atul Gour

• Gas Rahat Building Govindpura Bhopal, Madhya Pradesh. Bhoj (Open) University, 462016, India

Bibliografia

• [1] F.J. Ried, L.K. Matsan, J.F. Miller and R.C. Maines: “Electrical conduction in rareearth monoselenides and monotellurides and their alloyes”, J. Phys. Chem. Solids, Vol. 25, (1964), pp. 969–976. http://dx.doi.org/10.1016/0022-3697(64)90034-4[Crossref]
• [2] J.M. Rooymans: “High pressure phase transition of europium tellurides”, Solid State Comm., Vol. 3, (1965), pp. 421–424. http://dx.doi.org/10.1016/0038-1098(65)90269-3[Crossref]
• [3] A. Jayaraman, P.D. Dernier and L.D. Longinotti: “Valence electron transition in rare-earth monochalcogenides induced by pressure, alloying and temperature”, High Temp. High Press., Vol. 7, (1976), pp. 1–28.
• [4] A. Svane, Z. Szotek, W.M. Temmerman, J. Legsgaad and H. Winter: “Electronic structure of cerium monopnictides under pressure”, J. Phys. Condens. Matter, Vol. 10, (1998), pp. 5309–5325. http://dx.doi.org/10.1088/0953-8984/10/24/009[Crossref]
• [5] J.M. Leger, I. Vedel, A.M. Redon and J. Rossat-Mignod: “Pressure-volume relationships of cerium monochalcogenides and monopnictides”, J. Magn. Magn. Matter, Vol. 63 and 64, (1987), pp. 49–51. http://dx.doi.org/10.1016/0304-8853(87)90518-X[Crossref]
• [6] J.M. Leger: “Chalcogenides and pnictides of cerium and uranium under high pressure”, Physica B, Vol. 190, (1993), pp. 84–91. http://dx.doi.org/10.1016/0921-4526(93)90447-E[Crossref]
• [7] A. Werner, H.D. Hochheimer, R.L. Meng and E. Bucher: “Absence of pressure-induced valence change in CeAs”, Phys. Lett., Vol. 97A, (1983), pp. 207–209. [Crossref]
• [8] J.M. Leger, R. Epain, J. Lories, D. Ravot and J. Rossat-Mignod: “Anomalous behavior of CeTe under high pressure”, Phys. Rev. B, Vol. 28, (1980), pp 7125–7129. http://dx.doi.org/10.1103/PhysRevB.28.7125[Crossref]
• [9] V. Srivastava: “High pressure phase transition and elastic properties of cerium chalcogenides and pnictides”, J. Phys. Chem. Solids, Vol. 64, (2003), pp. 907–912. http://dx.doi.org/10.1016/S0022-3697(02)00419-5[Crossref]
• [10] A. Jayaraman, A.K. Singh, A. Chatterjee and S. Usha Devi: “Pressure-volume relationship and pressure-induced electronic and structural transformations in Eu and Yb monochalcogenides”, Phys. Rev. B., Vol. 9, (1974), pp. 2513–2520. http://dx.doi.org/10.1103/PhysRevB.9.2513[Crossref][WoS]
• [11] T. Le Bihan, A. Bombardi, M. Idiri, S. Healthman and A. Lindbaun: “High pressure X-ray diffraction study of Ux La1 xS solid solution”, J. Phys. Condens. Matter, Vol. 14, (2002), pp. 10595–10600. http://dx.doi.org/10.1088/0953-8984/14/44/339[Crossref]
• [12] Z.W. Lu, D.J. Singh and H. Krakauer: “Local density approximation study of LaS and SmS”, Phys. Rev. B, Vol. 37, (1988), pp. 10045–10049. http://dx.doi.org/10.1103/PhysRevB.37.10045[Crossref]
• [13] G. Vaitheeswaran, V. Kanchana and M. Rajagopalan: “Theoretical studies on the high pressure phases of Lanthanum monochalcogenides”, J. Phys. Chem. Solids, Vol. 64, (2003), pp. 15–26. http://dx.doi.org/10.1016/S0022-3697(02)00168-3[Crossref]
• [14] D. Varshney, N. Kaurav, P. Sharma, S. Shah and R.K. Singh: “Structural phase transition of Lanthanum monochalcogenides induced by hydrostatic pressure”, Phys. Status Solidi B, Vol. 241, (2004), pp. 3179–3184. http://dx.doi.org/10.1002/pssb.200405241[Crossref]
• [15] K.N. Jog, R.K. Singh and S.P. Sanyal: “Three body interactions effects on the phase transition and high pressure behavior of divalent metal oxides”, Phys. Rev. B, Vol. 35, (1987), pp. 5235–5243. http://dx.doi.org/10.1103/PhysRevB.35.5235[Crossref]
• [16] R.K. Singh and D.C. Gupta: “Pressure-induced phase transition in silver halides”, Phys Rev. B, Vol. 43, (1991), pp. 11185–11189. http://dx.doi.org/10.1103/PhysRevB.43.11185[Crossref]
• [17] R.K. Singh: “Many body interactions binary ionic solids”, Phys. Rep., Vol. 85, Vol. 259, (1982), pp. 259–401. http://dx.doi.org/10.1016/0370-1573(82)90020-5[Crossref]
• [18] R.K. Singh and S. Singh: “High pressure phase transition and elastic behavior of Aluminium compound semi-conductors”, Phys Rev. B, Vol. 45, (1992), pp. 1019–1022. http://dx.doi.org/10.1103/PhysRevB.45.1019[Crossref]
• [19] C.E. Sims, G.D. Barrera and N.L. Allan: “Thermodynamics and mechanism of B1 ? B2 phase transition in group-I halides and group-II oxides”, Phys. Rev. B, Vol. 57, (1998), pp. 11164–11172. http://dx.doi.org/10.1103/PhysRevB.57.11164[Crossref]
• [20] W. Cochran: “On lattice dynamical models of ionic crystals”, Crit. Rev. Sol. St. Sci., Vol. 2, (1971), pp. 1–44. http://dx.doi.org/10.1080/10408437108243425[Crossref]
• [21] D.W. Hafemeister and W.H. Flygare: “Outer-shell overlap integrals as a function of distance for halogen-halogen, halogen-alkali and alkali-alkali ions in the alkali halide lattices”, J. Chem. Phys., Vol. 43, (1965), pp. 795–800. http://dx.doi.org/10.1063/1.1696846[Crossref]
• [22] U.C. Sharma: On The Pressure Dependence Of The Mechanical Behavior Of ionic Solids, thesis (PhD), Vth Chapter, Agra University, 1985.
• [23] A.J. Miller, G.A. Saunders and Y.K. Yogurtev: “Pressure dependence of the elastic constants of PbTe, SnTe and Ge0.08Sn0.92Te”, J. Phys. C, Vol. 14, (1981), pp. 1569–1584. http://dx.doi.org/10.1088/0022-3719/14/11/018
• [24] M.R. Vukcevich: “On the stability of the alkali halide lattices under hydrostatic pressures”, Phys. Status Solidi B, Vol. 54, (1972), pp. 435–440. http://dx.doi.org/10.1002/pssb.2220540207[Crossref]
• [25] D.R. Lide: CRC Hand of book Chemistry and Physics, 82 Ed, CRC Press, New York, 2002.

Identyfikatory

DOI

10.2478/s11534-007-0037-2