Hydrothermal synthesis and magnetic properties of single-crystalline BiFeO3 nanowires

Abstract

One-dimensional, single-crystalline BiFeO(3) nanowires presenting a diameter of 45-200 nm and a length from hundreds of nanometres to several microns have been prepared using an improved hydrothermal method. The characterization results of ZFC and FC magnetizations at different temperatures indicate that single-crystalline BiFeO(3) nanowires show a spin-glass transition below the freezing temperature of 55 K.

Hydrothermal synthesis of DyMn2O5 nanorods and their magnetic properties

“…In previous works, some multiferroics materials have been selectively synthesized through the hydrothermal route, such as BiFeO 3 nanowires [7], TbMn 2 O 5 nanorods [8], BiMn 2 O 5 crystals [9], BaMnO 3 nanoparticles [10], RMn 2 O 5 (R = Gd and Sm) nanorods and nanoplates [11], RMn 2 O 5 (R = La, Pr, Nd, Tb, Bi) and LaMn 2 O 5+d [12], RMn 2 O 5 (R = Gd, Sm Yb) [13] and YMn 2 O 5 nanorods [14].…”

Structure and phase transition of BiFeO3 cubic micro-particles prepared by hydrothermal method

“…But it was difficult to avoid the impurities in the products such as Bi 2 Fe 4 O 9 and Bi 25 FeO 39 by solid state reaction method [4,5]. Subsequently, other methods have been developed to overcome these issues, such as ferrioxalate precursor method [6], sol-gel process [7], co-precipitation [8,9], spark plasma sintering [10] and hydrothermal method [11][12][13].…”

“…Thus, researchers have attempted to control the BiFeO 3 particle shape and size by using hydrothermal or microwave-hydrothermal method [11][12][13][16][17][18]. Pure BiFeO 3 with irregular particles [19], wafer-like particle shapes [20], nanowires [12,21], tubes [22,23], spheres, and cubes [16,24] was synthesized at different KOH concentrations. Previously, we researched the shape evolution of BiFeO 3 particles and synthesized homogenous octahedron BiFeO 3 particles [11] at 200 8C for 12 h with 8 M KOH.…”

Microwave hydrothermal synthesis of perovskite BiFeO3 nanoparticles: An insight into the phase purity during the microwave heating process

“…So the synthesis of nanostructured BFO with highly pure phase becomes essential not only for practical devices application but also for the fundamental studies. Until now, various methods have been developed to prepare BFO with different nanostructures, such as nanocubes [4], nanotubes [5] nanoparticles [6,7] and nanowires [8,9].…”