Hydrothermal Synthesis and Ferrimagnetism of Nd3-xSrxFe5O12(0.2≤x≤0.8) Substituted Garnets

doi:10.7503/cjcu20120370

Abstract

Abstract:

Nd_3-xSr_xFe₅O₁₂(x=0.2, 0.4, 0.6, 0.8) crystals, which are of cubic structure with the space group of Ia3d and lattice constants over 1.2600 nm, were synthesized using the hydrothermal method. Mössbauer spectroscopy demonstrates the coexistence of Sr²⁺ and Nd³⁺ at the C sites of the dodecahedrons. The crystals also appear dodecahedrons with similar sizes as can be seen from the scanning electron microscopy(SEM) images. By recording the magnetic hysteresis loops and M-T curves at high temperature, we find that with the x increasing, saturation magnetization values decrease while the coercive forces go up. The Curie temperature of all the samples remain almost unchanged, namely 570 K, regardless of the x variation.

Key words: Substituted garnet, Hydrothermal synthesis, Ferrimagnetism, Mö, ssbauer spectroscopy

CLC Number:

O614

TrendMD:

LIU Xian-Rui, HOU Chang-Min, YUAN Long, LIU Shao-Kong, QIN Yuan-Yuan, HUANG Ke-Ke, FENG Shou-Hua. Hydrothermal Synthesis and Ferrimagnetism of Nd_3-xSr_xFe₅O₁₂(0.2≤x≤0.8) Substituted Garnets[J]. Chem. J. Chinese Universities, 2013, 34(2): 277.

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Hydrothermal Synthesis and Ferrimagnetism of Nd_3-xSr_xFe₅O₁₂(0.2≤x≤0.8) Substituted Garnets

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