TY - JOUR
T1 - Crystallization and magnetic characterizations of DyIG and HoIG nanopowders fabricated using citrate sol-gel
AU - Nguyet, Dao Thi Thuy
AU - Duong, Nguyen Phuc
AU - Satoh, Takuya
AU - Anh, Luong Ngoc
AU - Loan, To Thanh
AU - Hien, Than Duc
N1 - Funding Information:
This research is funded by the Hanoi University of Science and Technology under grant number T2015-245 . The authors thank Prof. Kenjiro Miyano for the use of SQUID and Mr. Hirokatsu Shimizu for technical assistance.
Publisher Copyright:
© 2016 The Authors
PY - 2016/6
Y1 - 2016/6
N2 - Dy and Ho iron garnets in form of nanoparticles were synthesized by citrate sol-gel method. Phase formation, lattice constant and average crystallite sizes of the samples were determined via XRD measurements. Morphology and particle size distribution were studied by TEM and chemical composition was checked by EDX. Magnetic measurements in temperature range 5–600 K and in the maximum applied field of 50 kOe were carried out by using SQUID and VSM. Their magnetic parameters, including Curie temperature, magnetization compensation temperature, spontaneous magnetization, high-field susceptibility, magnetic coercivity were discussed in the framework of three interacting magnetic sublattices, magnetocrystalline anisotropy, core-shell model and compared to those of the bulk materials. Based on these analyses further evaluation on the crystallinity and homogeneity of the samples has been made.
AB - Dy and Ho iron garnets in form of nanoparticles were synthesized by citrate sol-gel method. Phase formation, lattice constant and average crystallite sizes of the samples were determined via XRD measurements. Morphology and particle size distribution were studied by TEM and chemical composition was checked by EDX. Magnetic measurements in temperature range 5–600 K and in the maximum applied field of 50 kOe were carried out by using SQUID and VSM. Their magnetic parameters, including Curie temperature, magnetization compensation temperature, spontaneous magnetization, high-field susceptibility, magnetic coercivity were discussed in the framework of three interacting magnetic sublattices, magnetocrystalline anisotropy, core-shell model and compared to those of the bulk materials. Based on these analyses further evaluation on the crystallinity and homogeneity of the samples has been made.
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U2 - 10.1016/j.jsamd.2016.05.005
DO - 10.1016/j.jsamd.2016.05.005
M3 - Article
AN - SCOPUS:85018495154
SN - 2468-2284
VL - 1
SP - 193
EP - 199
JO - Journal of Science: Advanced Materials and Devices
JF - Journal of Science: Advanced Materials and Devices
IS - 2
ER -