Structural Study of (NH_{4})_{4}H_{2}(SeO_{4})_{3} in the Low-Temperature Phase

• Authors: T. Fukami , N. Higa , R. Chen
• Languages of publication: EN

Abstracts

EN

The crystal structure of tetraammonium dihydrogen triselenate, (NH_{4})_{4}H_{2}(SeO_{4})_{3}, in the low-temperature phase at 141 K is studied by X-ray diffraction. The space group symmetry (triclinic P1) and the structure parameters are determined. By the shift of the Se atom from the center of the SeO_{4} tetrahedron, it is suggested that the (NH_{4})_{4}H_{2} (SeO_{4})_{3} crystal in the low-temperature phase is ferroelectric with the electric dipole moment along the c-axis. The rotation of the SeO_{4} tetrahedron suggested by electron paramagnetic resonance measurements is discussed.

Keywords

EN

61.66.Fn; 64.60.Fr

Discipline

• 61.66.Fn: Inorganic compounds

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 4
• Pages: 663-670

Dates

published

2000-04

received

1999-10-07

(unknown)

1999-12-21

Contributors

author

T. Fukami

• Department of Physics and Earth Sciences, Faculty of Science University of the Ryukyus, Okinawa 903-0213, Japan

author

N. Higa

• Department of Physics and Earth Sciences, Faculty of Science University of the Ryukyus, Okinawa 903-0213, Japan

author

R. Chen

• Department of Physics, National Taiwan Normal University Taipei, Taiwan, 117, Republic of China

Identifiers

DOI

10.12693/APhysPolA.97.663