TY - JOUR
T1 - Electrochemical crystal growth and properties in Ln2O 3-MnO-CoO (Ln=La, Ho) system
AU - Shirvaev, S. V.
AU - Bychkov, G. L.
AU - Barilo, S. N.
AU - Ustinovich, S. N.
AU - Podlesnyak, A.
AU - Baran, M.
AU - Szymczak, R.
AU - Furrer, A.
PY - 2005/2/15
Y1 - 2005/2/15
N2 - We have developed a known approach of electrochemical deposition to grow successfully neutron sized single crystals of pure and mixed compounds in the Ln2O3-MnO-CoO system. Reported in detail, it is a growth technique with a seed of LnAO3+x (Ln=La, Ho; A=Co, Mn) single crystals up to 2 cm3 in volume using the 2.2Cs 2MoO4-MoO3 mixtures as solvent. The best crystals were grown in the temperature range 1050-1100 °C to reveal FWHM ∼0.1° of the rocking curves. A primary crystallization temperature range for LaCo1-xMnxO3 ternary oxides was found to be 830-1170 °C. But, quasi-equilibrium growth was seen only for the temperature interval 1000-1050 °C. In turn, much more stable growth and wide primary crystallization field were registered for single crystals of HoCo1-xMnxO3 solid solution. The grown crystals accept mostly a cubic-like shape. However, weekly developed (1 1 1) type faces could be recognized in some cases. Here, we also report on studies of crystal field excitations and present the data of magnetic susceptibility of the electrochemically grown crystals.
AB - We have developed a known approach of electrochemical deposition to grow successfully neutron sized single crystals of pure and mixed compounds in the Ln2O3-MnO-CoO system. Reported in detail, it is a growth technique with a seed of LnAO3+x (Ln=La, Ho; A=Co, Mn) single crystals up to 2 cm3 in volume using the 2.2Cs 2MoO4-MoO3 mixtures as solvent. The best crystals were grown in the temperature range 1050-1100 °C to reveal FWHM ∼0.1° of the rocking curves. A primary crystallization temperature range for LaCo1-xMnxO3 ternary oxides was found to be 830-1170 °C. But, quasi-equilibrium growth was seen only for the temperature interval 1000-1050 °C. In turn, much more stable growth and wide primary crystallization field were registered for single crystals of HoCo1-xMnxO3 solid solution. The grown crystals accept mostly a cubic-like shape. However, weekly developed (1 1 1) type faces could be recognized in some cases. Here, we also report on studies of crystal field excitations and present the data of magnetic susceptibility of the electrochemically grown crystals.
KW - A2. Electrochemical crystallization
KW - B1. Cobaltates and manganites
KW - B2. Magnetic materials
UR - http://www.scopus.com/inward/record.url?scp=15844416508&partnerID=8YFLogxK
U2 - 10.1016/j.jcrysgro.2004.11.088
DO - 10.1016/j.jcrysgro.2004.11.088
M3 - Conference article
AN - SCOPUS:15844416508
SN - 0022-0248
VL - 275
SP - e751-e756
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 1-2
ER -