The monoclinic/orthorhombic phase transition in Ba2Cu(HCOO)6:: An optical and X-ray powder diffraction study

被引：2

作者：

Polla, G ^{[1
]}

Vega, D ^{[1
]}

Leyva, AG ^{[1
]}

de Perazzo, PK ^{[1
]}

Lanza, H ^{[1
]}

de Benyacar, MAR ^{[1
]}

机构：

[1] Comis Nacl Energia Atom, Dept Fis, TANDAR, RA-1429 Buenos Aires, DF, Argentina

来源：

PHASE TRANSITIONS | 2000年 / 72卷 / 01期

关键词：

Ba2Cu(HCOO)(6); phase transition; domain structure;

D O I：

10.1080/01411590008224547

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

alpha-Ba2Cu(HCOO)(6) grown at room temperature crystallizes in space group P2(1). On heating a reversible, hysteretic, equitranslational, first-order phase transition at about 60-90 degrees C takes place. Here we discuss the influence of thermal treatments on the occurrence, coexistence and stability ranges of the two observed phases, as studied by several techniques (optical microscopy, differential scanning calorimetry and X-ray diffraction). On cooling a single set of domain walls parallel to (001) have been observed. Taking into account experimental results acid the crystal pseudosymmetry of the alpha phase we propose that the high-temperature beta phase crystallizes in space group Pbnm.

引用

页码：15 / 24

页数：10

共 50 条

[1] X-ray diffraction study on phase transition of orthorhombic LiMnO2 in electrochemical conversions
Tu, X. Y.
Shu, K. Y.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2008, 12 (03) : 245 - 249
[2] X-ray diffraction study on phase transition of orthorhombic LiMnO2 in electrochemical conversions
X. Y. Tu
K. Y. Shu
Journal of Solid State Electrochemistry, 2008, 12 : 245 - 249
[3] Phase transition of Ba2In2O5 in humid air studied by in-situ X-ray powder diffraction
Fischer, W
Reck, G
Schober, T
EUROPEAN POWDER DIFFRACTION, PTS 1 AND 2, 2000, 321-3 : 363 - 367
[4] Tetragonal to orthorhombic phase transition of GdFeAsO studied by single-crystal X-ray diffraction
Nitsche, F.
Doert, Th.
Ruck, M.
SOLID STATE SCIENCES, 2013, 19 : 162 - 166
[5] Neutron powder diffraction study of the orthorhombic to monoclinic transition in Sc2W3O12 on compression
Varga, T
Wilkinson, AP
Jorgensen, JD
Short, S
SOLID STATE SCIENCES, 2006, 8 (3-4) : 289 - 295
[6] Automatic determination of phase transition points in in situ X-ray powder diffraction experiments
Rajiv, P.
Dinnebier, R. E.
Jansen, M.
POWDER DIFFRACTION, 2009, 24 (01) : 8 - 16
[7] In Situ X-ray Diffraction Study of the Formation, Growth, and Phase Transition of Colloidal Cu2-xS Nanocrystals
Norby, Peter
Johnsen, Simon
Iversen, Bo B.
ACS NANO, 2014, 8 (05) : 4295 - 4303
[8] X-ray study of the superionic phase transition in Cu6PS5Br
Haznar, A
Pietraszko, A
Studenyak, IP
SOLID STATE IONICS, 1999, 119 (1-4) : 31 - 36
[9] Pressure induced phase transition in Fe0.47NbS2 studied by powder X-ray diffraction
Ehm, L.
Knorr, K.
Peters, L.
Rath, S.
Depmeier, W.
JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 429 (1-2) : 82 - 86
[10] Synchrotron X-ray powder diffraction study of a pressure-induced phase transition in ferroelectric PbTiO3
Levy, D
Sani, A
EPDIC 7: EUROPEAN POWDER DIFFRACTION, PTS 1 AND 2, 2001, 378-3 : 539 - 544

← 1 2 3 4 5 →