Structural, electric and magnetic properties of Pb2Mg1-xCuxWO6

XRD, EPR and electric measurements performed on Pb2Mg1-xCuxWO6 (PMCW) are reported. By Cu substitution for Mg, the diffraction lines are similar to that of Pb2MgWO6 (PMW), but a small shift of peaks towards small angles is observed. For x = 0.3-0.5, new lines appear due to an unknown phase. The EPR...

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Veröffentlicht in:	Materials letters 2003, Vol.57 (7), p.1327-1329
Hauptverfasser:	BARBUR, I, ARDELEAN, I, BORODI, G, VERES, A, CETE, Z
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Dielectric properties of solids and liquids Dielectrics, piezoelectrics, and ferroelectrics and their properties Electron paramagnetic resonance and relaxation Exact sciences and technology Inorganic compounds Iron group (3d) ions and impurities (ti-cu) Magnetic resonances and relaxations in condensed matter, mössbauer effect Permittivity (dielectric function) Physics Structure of solids and liquids crystallography Structure of specific crystalline solids Water, oxides, hydroxides, peroxides
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Zusammenfassung:	XRD, EPR and electric measurements performed on Pb2Mg1-xCuxWO6 (PMCW) are reported. By Cu substitution for Mg, the diffraction lines are similar to that of Pb2MgWO6 (PMW), but a small shift of peaks towards small angles is observed. For x = 0.3-0.5, new lines appear due to an unknown phase. The EPR spectrum is due to the Cu2+ ions. Dielectric anomaly at T(c) (38 C) related to the antiferroelectric transition in Pb2MgWO6 is affected by Cu substitution for Mg. T(c) increases linearly with Cu content and transition becomes more diffuse. 4 refs.
ISSN:	0167-577X 1873-4979
DOI:	10.1016/S0167-577X(02)00981-3