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Title: pH-dependent liquid order at the solid-solution interface of KH{sub 2}PO{sub 4} crystals

Abstract

We have determined the solid-liquid interface structure of the {l_brace}101{r_brace} and {l_brace}100{r_brace} faces of KH{sub 2}PO{sub 4} (KDP) crystals in contact with a growth solution for three different pH values. Using surface x-ray diffraction data we find in all cases several liquid layers with varying degrees of lateral and perpendicular order. The structural changes are large for the {l_brace}101{r_brace} face and small for the {l_brace}100{r_brace}, which correlates with the changes in the macroscopic growth velocity of these faces. The changes at the {l_brace}101{r_brace} face are likely due to the pH-dependent competition between K{sup +} and H{sub 3}O{sup +} bonding. For the highest pH value crystalline preordering is observed.

Authors:
; ; ; ;  [1]
  1. IMM Solid State Chemistry, Radboud University Nijmegen, Toernooiveld 1, 6525 ED Nijmegen (Netherlands)
Publication Date:
OSTI Identifier:
20787765
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 72; Journal Issue: 24; Other Information: DOI: 10.1103/PhysRevB.72.245404; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL GROWTH; CRYSTAL STRUCTURE; CRYSTALS; INTERFACES; LAYERS; POTASSIUM IONS; POTASSIUM PHOSPHATES; SOLID SOLUTIONS; SURFACES; X-RAY DIFFRACTION

Citation Formats

Kaminski, D., Radenovic, N., Deij, M.A., Enckevort, W.J.P. van, and Vlieg, E.. pH-dependent liquid order at the solid-solution interface of KH{sub 2}PO{sub 4} crystals. United States: N. p., 2005. Web. doi:10.1103/PHYSREVB.72.2.
Kaminski, D., Radenovic, N., Deij, M.A., Enckevort, W.J.P. van, & Vlieg, E.. pH-dependent liquid order at the solid-solution interface of KH{sub 2}PO{sub 4} crystals. United States. doi:10.1103/PHYSREVB.72.2.
Kaminski, D., Radenovic, N., Deij, M.A., Enckevort, W.J.P. van, and Vlieg, E.. Thu . "pH-dependent liquid order at the solid-solution interface of KH{sub 2}PO{sub 4} crystals". United States. doi:10.1103/PHYSREVB.72.2.
@article{osti_20787765,
title = {pH-dependent liquid order at the solid-solution interface of KH{sub 2}PO{sub 4} crystals},
author = {Kaminski, D. and Radenovic, N. and Deij, M.A. and Enckevort, W.J.P. van and Vlieg, E.},
abstractNote = {We have determined the solid-liquid interface structure of the {l_brace}101{r_brace} and {l_brace}100{r_brace} faces of KH{sub 2}PO{sub 4} (KDP) crystals in contact with a growth solution for three different pH values. Using surface x-ray diffraction data we find in all cases several liquid layers with varying degrees of lateral and perpendicular order. The structural changes are large for the {l_brace}101{r_brace} face and small for the {l_brace}100{r_brace}, which correlates with the changes in the macroscopic growth velocity of these faces. The changes at the {l_brace}101{r_brace} face are likely due to the pH-dependent competition between K{sup +} and H{sub 3}O{sup +} bonding. For the highest pH value crystalline preordering is observed.},
doi = {10.1103/PHYSREVB.72.2},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 24,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}