Research output: Contribution to journal › Article
Dielectric properties of the nanoporous MCM-41 matrix filled with the (NH4)2SO4 ferroelectric. / Baryshnikov, S.V.; Charnaya, E.V.; Milinskii, A.Y.; Goikhman, A.Y.; Tien, C.; Lee, M.K.; Chang, L.J.
In: Physics of the Solid State, Vol. 55, No. 5, 2013, p. 1070-1073.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Dielectric properties of the nanoporous MCM-41 matrix filled with the (NH4)2SO4 ferroelectric
AU - Baryshnikov, S.V.
AU - Charnaya, E.V.
AU - Milinskii, A.Y.
AU - Goikhman, A.Y.
AU - Tien, C.
AU - Lee, M.K.
AU - Chang, L.J.
PY - 2013
Y1 - 2013
N2 - Variations with temperature of the linear dielectric permittivity and amplitude of the third harmonic were studied for nanoporous MCM-41 matrices with 4.0-nm channel pores filled with the (NH4)2SO4 ferroelectric, in comparison with bulk ammonium sulfate. The measurements were performed upon heating and cooling in the temperature range from 100 K to room temperature. A noticeable shift to low temperatures (by approximately 25 K) for the ferroelectric phase transition in the MCM-41/(NH4)2SO4 nanocomposite as compared to bulk (NH4)2SO4 was revealed. The temperature hysteresis observed at the phase transition in the nanocomposite was approximately 2 K which is close to that in bulk ammonium sulfate. The significant decrease of the transition temperature in nanostructured ammonium sulfate agrees with the theoretical predictions based on the Landau and Ising models of the size effect on the ferroelectric phase transition in isolated small particles. © 2013 Pleiades Publishing, Ltd.
AB - Variations with temperature of the linear dielectric permittivity and amplitude of the third harmonic were studied for nanoporous MCM-41 matrices with 4.0-nm channel pores filled with the (NH4)2SO4 ferroelectric, in comparison with bulk ammonium sulfate. The measurements were performed upon heating and cooling in the temperature range from 100 K to room temperature. A noticeable shift to low temperatures (by approximately 25 K) for the ferroelectric phase transition in the MCM-41/(NH4)2SO4 nanocomposite as compared to bulk (NH4)2SO4 was revealed. The temperature hysteresis observed at the phase transition in the nanocomposite was approximately 2 K which is close to that in bulk ammonium sulfate. The significant decrease of the transition temperature in nanostructured ammonium sulfate agrees with the theoretical predictions based on the Landau and Ising models of the size effect on the ferroelectric phase transition in isolated small particles. © 2013 Pleiades Publishing, Ltd.
U2 - 10.1134/S1063783413050041
DO - 10.1134/S1063783413050041
M3 - Article
VL - 55
SP - 1070
EP - 1073
JO - Physics of the Solid State
JF - Physics of the Solid State
SN - 1063-7834
IS - 5
ER -
ID: 5629122