TY - JOUR
T1 - Influence of the crystal structure on the physical properties of monoclinic ZrO2 nanocrystals
AU - Taguchi, Minori
AU - Matsushita, Akiyuki
AU - Uchikoshi, Tetsuo
AU - Sakka, Yoshio
AU - Takami, Seiichi
AU - Funazukuri, Toshitaka
AU - Naka, Takashi
N1 - Funding Information:
This study was supported by the Asahi Glass Foundation and a Grant-in-Aid for Scientific Research (A) (KAKENHI) No. 25246013 . It was performed under the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”.
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/10/14
Y1 - 2015/10/14
N2 - The influence of the crystal structure on the physical properties of monoclinic ZrO2 nanocrystals is investigated by an annealing treatment. Monoclinic ZrO2 nanocrystals with diameters of approximately 20 nm are synthesized by a hydrothermal method using subcritical water. The nanocrystals have chemisorbed water molecules, hydroxides and nitro groups on their surfaces. The crystallographic structures are reformed by annealing the nanocrystals at 800 °C for 5 h. This treatment causes the crystallite sizes to increase, the crystal lattice to shrink and some of the molecules chemisorbed on the surfaces to be lost. The annealing treatment leads to there being fewer lattice defects, and to the modification of surface characteristics of the nanocrystals. The treatment also changes the optical absorption characteristics of the nanocrystals. The magnetic moments caused by lattice defects are identified.
AB - The influence of the crystal structure on the physical properties of monoclinic ZrO2 nanocrystals is investigated by an annealing treatment. Monoclinic ZrO2 nanocrystals with diameters of approximately 20 nm are synthesized by a hydrothermal method using subcritical water. The nanocrystals have chemisorbed water molecules, hydroxides and nitro groups on their surfaces. The crystallographic structures are reformed by annealing the nanocrystals at 800 °C for 5 h. This treatment causes the crystallite sizes to increase, the crystal lattice to shrink and some of the molecules chemisorbed on the surfaces to be lost. The annealing treatment leads to there being fewer lattice defects, and to the modification of surface characteristics of the nanocrystals. The treatment also changes the optical absorption characteristics of the nanocrystals. The magnetic moments caused by lattice defects are identified.
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U2 - 10.1016/j.nanoso.2015.03.001
DO - 10.1016/j.nanoso.2015.03.001
M3 - Article
AN - SCOPUS:84944063672
VL - 1
SP - 1
EP - 6
JO - Nano-Structures and Nano-Objects
JF - Nano-Structures and Nano-Objects
SN - 2352-507X
ER -