2016年12月
Birefringence Imaging Measurements on Various Structural Phase Transitions in (CnH2n+1NH3)(2)MnCl4 with n=1, 2, and 3 Using Multiple Wavelengths
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
- ,
- ,
- 巻
- 85
- 号
- 12
- 開始ページ
- 124701(1)
- 終了ページ
- 124701(8)
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.7566/JPSJ.85.124701
- 出版者・発行元
- PHYSICAL SOC JAPAN
Birefringence imaging microscopy is well suited for comprehensively investigating various structural phase transitions but its weak point is that it imposes an inherent limit on the maximum retardance that can be detected. To detect retardance above this limit, we performed simultaneous birefringence measurements at multiple wavelengths on (CnH2n+1NH3)(2)MnCl4 with n = 1; 2; 3. For n = 1, we successfully detected large jumps in retardance (over six times greater than the limit) in the first-order phase transitions at T-c1 similar or equal to 88K and T-c2 similar or equal to 251 K. For n = 2, a gradual change in retardance appears in the second-order phase transition at T-c = 214 K. High-definition images of optical fast-axis azimuths provided information on the misorientation of the alkylammonium chains. For n = 3, a retardance kink appears at T-c4 similar or equal to 152-155 K, and a retardance jump appears in the commensurate-incommensurate phase transition at T-c5 similar or equal to 96-99 K.
- リンク情報
- ID情報
-
- DOI : 10.7566/JPSJ.85.124701
- ISSN : 0031-9015
- J-Global ID : 201702256192912594
- Web of Science ID : WOS:000387456000011