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Ferroelectrics Volume 401, 2010 - Issue 1
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SECTION A: THEORIES, MODELING, DOMAINS, PHASE TRANSITIONS AND CRITICAL PHENOMENA

Thermal Analysis and X-Ray Structural Study on Phase Transitions in NH4CsZnCl4

Y.-J. Teng Department of Electronics and Information Engineering, College of Engineering, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501, Japan
,
Y. Suzuki Department of Electronics and Information Engineering, College of Engineering, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501, Japan
,
M. Yamamoto Department of Engineering Physics, College of Engineering, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501, Japan
,
T. Kurihama Department of Electronics and Information Engineering, College of Engineering, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501, Japan
,
E. Ishikawa Department of Applied Chemistry, College of Engineering, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501, Japan
,
F. Shimizu Department of Electronics and Computer Science, College of Science and Engineering, Iwaki Meisei University, 5-5-1 Iino, Chuohdai, Iwaki, Fukushima, 970-8551, Japan
,
T. Yamaguchi Department of Electrical Engineering, School of Science and Engineering, Meisei University, 2-1-1 Hodokubo, Hino, Tokyo, 191-8506, Japan
&
M. Takashige Department of Electronics and Computer Science, College of Science and Engineering, Iwaki Meisei University, 5-5-1 Iino, Chuohdai, Iwaki, Fukushima, 970-8551, Japan
 show all
Pages 110-116 | Received 23 Aug 2009, Accepted 13 Oct 2009, Published online: 01 Dec 2010
 
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Abstract

Ammonium cesium tetrachlorozincate (NH4CsZnCl4), one of the new ABXY 4-type in the (NH4)2SO4 family, was crystallized by evaporating the aqueous solution at room temperature. The phase transition and crystal structure were studied by means of thermogravimetric analysis, differential scanning calorimetry and single-crystal X-ray diffraction. As a result of thermal anomaly detection in the temperature range between 93 K and 473 K, anomalies corresponding to phase transitions were observed at around 216 K, 242 K and 458 K. It was also revealed that NH4CsZnCl4 belonged to the orthorhombic crystal system at room temperature and had lattice constants of a = 5.994(2) Å, b = 10.636(2) Å and c = 7.784(2) Å.

Acknowledgment

This research was partly funded by The Nitto Foundation and The Naito Science & Engineering Foundation.

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