Search Results - "Graetsch, Heribert A"

Zn Incorporation in X and Z-Type Hexagonal Ferrites Ba(Zn,Fe)15O23 and Ba3(Zn,Fe)26O41 by Graetsch, Heribert A.

“…Interatomic distance considerations and site occupancy refinements indicate that Zn 2+ is exclusively located on tetrahedral sites in both Z and X-type…”
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Structure of strontium barium niobate SrxBa1 − xNb2O6 (SBN) in the composition range 0.32 ≤x≤ 0.82 by Podlozhenov, Sergey, Graetsch, Heribert A., Ulex, Michael, Schneider, Julius, Wöhlecke, Manfred, Betzler, Klaus

“…The structure of strontium barium niobate crystals SrxBa1 − xNb2O6 is comprehensively studied in the whole range of the tetragonal tungsten bronze phase (x =…”
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Incommensurate modulation of calcium barium niobate (CBN28 and Ce:CBN28) by Graetsch, Heribert A., Pandey, Chandra Shekhar, Schreuer, Jürgen, Burianek, Manfred, Mühlberg, Manfred

“…The incommensurately modulated crystal structures of Ca0.28Ba0.72Nb2O6 (CBN28) and Ce0.02Ca0.25Ba0.72Nb2O6 (Ce:CBN28) were refined in the supercentred setting…”
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Incommensurate modulations of relaxor ferroelectric Ca0.24Ba0.76Nb2O6 (CBN24) and Ca0.31Ba0.69Nb2O6 (CBN31) by Graetsch, Heribert A., Pandey, Chandra Shehkar, Schreuer, Jürgen, Burianek, Manfred, Mühlberg, Manfred

“…CBN crystals show a one‐ and a two‐dimensionally modulated modification. The former is isotypic with orthorhombic Ba4Na2Nb10O30 and the latter with the…”
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Structural changes of relaxor ferroelectric Sr0.52Ba0.48Nb2O6 (SBN52) on quenching and reheating by Graetsch, Heribert A.

“…Quenching of Sr0.52Ba0.48Nb2O6 (SBN52) from temperatures above 700°C causes small modifications in the strontium distribution over the large cation sites (Me1…”
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Structural changes of relaxor ferroelectric Sr 0.52 Ba 0.48 Nb 2 O 6 (SBN52) on quenching and reheating by Graetsch, Heribert A

“…Quenching of Sr Ba Nb O (SBN52) from temperatures above 700°C causes small modifications in the strontium distribution over the large cation sites (Me1 and…”
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Modulated crystal structure of incommensurate low tridymite by Graetsch, Heribert A.

“…The incommensurately modulated crystal structure of low SiO2 tridymite was refined based on single‐crystal X‐ray diffraction data in the superspace group…”
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Rietveld refinement of synthetic monoclinic NaBSiO4 by Graetsch, Heribert A, Schreyer, Werner

“…A full-pattern X-ray powder-diffraction refinement reveals that NaBSiO4 prepared at 6 GPa and 700DGC crystallizes in space group P21/n with the structure of…”
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Monoclinic AlPO4 tridymite at 473 and 463 K from X-ray powder data by Graetsch, Heribert A.

“…Upon cooling from its hexagonal high‐temperature modification, AlPO4 (aluminium phosphate) tridymite successively transforms to several displacively distorted…”
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Long-Range and Local Structure of Sr x Ba 1– x Nb 2 O 6 ( x = 0.33 and 0.67) across the Ferroelectric–Relaxor Transition by Li, Cheng, Zhang, Yuanpeng, Liu, Jue, Graetsch, Heribert A.

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Zn location in the W-type hexagonal ferrite SrZnCoFe16O27 by Graetsch, Heribert A.

“…The title compound, SrZnCoFe16O27 (ZnCo‐W), strontium zinc cobalt hexadecairon oxide, crystallizes in space group P63/mmc, with the Sr atom at a site with…”
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Hexagonal high-temperature form of aluminium phosphate tridymite from X-ray powder data by Graetsch, Heribert A.

“…Similar to silica tridymite, AlPO4 tridymite shows a sequence of displacive phase transitions resulting in a dynamically disordered hexagonal high‐temperature…”
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Long-Range and Local Structure of Sr x Ba1–x Nb2O6 (x = 0.33 and 0.67) across the Ferroelectric–Relaxor Transition by Li, Cheng, Zhang, Yuanpeng, Liu, Jue, Graetsch, Heribert A

“…Tetragonal tungsten bronze (TTB), with a flexible chemical framework, is an important class of ferroelectric oxide that hosts both the frequency-independent…”
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Incommensurate modulations of relaxor ferroelectric Ca sub(0.24)Ba sub(0.76)Nb sub(2)O sub(6) (CBN24) and Ca sub(0.31)Ba sub(0.69)Nb sub(2)O sub(6) (CBN31) by Graetsch, Heribert A, Pandey, Chandra Shehkar, Schreuer, Juergen, Burianek, Manfred, Muehlberg, Manfred

“…CBN crystals show a one- and a two-dimensionally modulated modification. The former is isotypic with orthorhombic Ba sub(4)Na sub(2)Nb sub(10 )O sub(30) and…”
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Incommensurate modulations of relaxor ferroelectric Ca 0.24 Ba 0.76 Nb 2 O 6 (CBN24) and Ca 0.31 Ba 0.69 Nb 2 O 6 (CBN31) by Graetsch, Heribert A., Pandey, Chandra Shehkar, Schreuer, Jürgen, Burianek, Manfred, Mühlberg, Manfred

“…CBN crystals show a one- and a two-dimensionally modulated modification. The former is isotypic with orthorhombic Ba 4 Na 2 Nb 10 O 30 and the latter with the…”
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Zn location in the W -type hexagonal ferrite SrZnCoFe 16 O 27 by Graetsch, Heribert A.

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Monoclinic AlPO 4 tridymite at 473 and 463 K from X-ray powder data by Graetsch, Heribert A.

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Structure of strontium barium niobate Sr x Ba 1 −  x Nb 2 O 6 (SBN) in the composition range 0.32 ≤ x ≤ 0.82 by Podlozhenov, Sergey, Graetsch, Heribert A., Schneider, Julius, Ulex, Michael, Wöhlecke, Manfred, Betzler, Klaus

“…The structure of strontium barium niobate crystals Sr x Ba 1 −  x Nb 2 O 6 is comprehensively studied in the whole range of the tetragonal tungsten bronze…”
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