The series LnSrVO4: synthesis, crystal structure, crystal chemistry and magnetic susceptibilities

The series LnSrVO4: synthesis, crystal structure, crystal chemistry and magnetic susceptibilities
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LnSrVO4 系列:合成、晶体结构、晶体化学和磁化率

DOI:
10.1016/0925-8388(92)90393-n
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发表时间:
1992
影响因子:
6.2
通讯作者:
W. Gong
W. Gong
中科院分区:
材料科学2区
文献类型:
--
作者:
J. Greedan;W. Gong

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通过将Ln2O3、srco3和v2o5或srco3和lnvo4的混合物在1200℃下氢还原24 h,可以合成lnsrvo4系列的几个成员。该系列从镧到含铽。从结构场半径比和大阳离子尺寸失配比两个方面讨论了存在范围。利用粉末中子衍射数据对Ln、La、Ce、Pr和Nd的晶体结构进行了细化。从x射线基尼尔数据中报告所有成员的细胞常数。所有化合物均与K2NiF4、I4/mmm同构。描述了从4.2 K到300 K的磁化率数据。LnCe, Pr和Nd可能存在约2.6 β / V3+的局部矩,但LnLa代表另一种情况。
The synthesis of several members of the series LnSrVO4can be achieved by hydrogen reduction of mixtures of Ln2O3, SrCO3and V2O5or SrCO3and LnVO4at 1200 °C for 24 h. The series exists from lanthanum to terbium inclusive. The range of existence is discussed in terms of the ratio of radii of the structure fields and the large cation size mismatch ratios. Crystal structures were refined from powder neutron diffraction data for Ln  La, Ce Pr and Nd. Cell constants are reported for all members from X-ray Guinier data. All compounds are isostructural with K2NiF4, I4/mmm. Magnetic susceptibility data from 4.2 K to 300 K are described. It is possible that a local moment of about 2.6 β per V3+exists for Ln  Ce, Pr and Nd but Ln  La represents a different case.
DOI: 10.1007/bf01303701
发表时间: 1986-01-01
期刊: ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER
影响因子: --
作者:
BEDNORZ, JG;MULLER, KA
通讯作者: MULLER, KA
DOI: 10.1103/physrevlett.58.408
发表时间: 1987-01-26
影响因子: 8.6
作者:
CAVA, RJ;VANDOVER, RB;RIETMAN, EA
通讯作者: RIETMAN, EA