Croissance de monocristaux d'orthoferrite d'yttrium par tirage czochralski

Growth rate dependence of the NdFeO3 single crystal grown by float-zone technique

“…But the crystals still suffer from many kinds of disadvantages such as very small size, voids, dislocation, cracks and so on. During the growth of high quality RFeO 3 single crystal, various problems were encountered in other technologies like hydrothermal method, Czochralski pulling, liquid-phase homoepitaxial method and the seeded Bridgman method [13][14][15][16][17]. The optical floating-zone technique, with the advantages of being containerfree, non-polluting and possessing high growth rate, is the most effective method for the growth of RFeO 3 single crystal [18,19].…”

In SituObservation of Metastable Rare‐Earth Iron Garnet Formed at the Melt/Substrate Interface by Splat Quenching

“…Moreover, the maximum temperature of the first recalescence for the metastable garnet (peak G) was ∼60 K lower than the expected peritectic temperature of Nd x Sm 3− x Fe 5 O 12 ( x =0.43). The transmittance range for the garnet is known to be 1–9 μm, 8 whereas the perovskite transmits light in the range of 1–3 μm 9 . Moreover, although the transmittance data of the amorphous phase was only available below a wavelength of 2.2 μm 10 , the amorphous phase will transmit light with a wavelength suitable for the InSb detector (3–5 μm).…”

“…The transmittance range for the garnet is known to be 1-9 mm, 8 whereas the perovskite transmits light in the range of 1-3 mm. 9 Moreover, although the transmittance data of the amorphous phase was only available below a wavelength of 2.2 mm 10 , the amorphous phase will transmit light with a wavelength suitable for the InSb detector (3-5 mm). Therefore, the reduction of the maximum temperature of the first recalescence (peak G) from the peritectic temperature would be mainly caused due to the observation through the amorphous layer.…”