Unusually Long-Time Protonic Conductivity Behavior of CsH5(PO4)2 Crystal at High Pressure |
| M. Zdanowska-Frączeka, T. Masłowskib
aInstitute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland bThe Faculty of Mathematics and Applied Physics, Rzeszow University of Technology, al. Powstańców Warszawy 6, 35 959 Rzeszów, Poland |
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| Impedance spectroscopy was used to examine the electrical conductivity of CsH5(PO4)2 single crystals across a frequency range from 100 Hz to 1 MHz, with measurements taken at temperatures from 350 to 417 K and pressures from 0.1 to 360 MPa. At 417 K and 170.7 MPa, the protonic conductivity of the crystal showed significant changes over time. Initially, conductivity remained relatively stable for less than 10 h; however, it increased tenfold within 300 h, exhibiting erratic fluctuations followed by a gradual decline. We suggest a three-dimensional model of protonic conductivity that qualitatively reproduces the observed behavior. |
DOI:10.12693/APhysPolA.148.295 topics: CsH5(PO4)2, proton conductivity, impedance spectroscopy, high pressure |