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Title: Collapse and reappearance of magnetic orderings in spin frustrated TbMnO{sub 3} induced by Fe substitution

Abstract

We studied the temperature dependent magnetic phase evolution in spin frustrated TbMnO{sub 3} affected by Fe doping via powder neutron diffraction. With the introduction of Fe (10% and 20%), the long range incommensurate magnetic orderings collapse. When the Fe content is increased to 30%, a long-range antiferromagnetic ordering develops, while a spin reorientation transition is found near 35 K from a canted G-type antiferromagnetic ordering to a collinear G-type antiferromagnetic ordering. This work demonstrates the complex magnetic interactions existing in transition metal oxides, which helps to understand the frustrated spin states in other similar systems and design magnetic materials as well.

Authors:
 [1];  [2];  [3];  [4];  [3];  [1];  [5];  [6]; ; ; ;  [1]
  1. Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, New South Wales 2500 (Australia)
  2. (China)
  3. (United States)
  4. Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Rd. Pudong, Shanghai 201203 (China)
  5. (ANSTO), Bragg Institute, Lucas Heights, New South Wales 2234 (Australia)
  6. The Australian Nuclear Science and Technology Organization (ANSTO), Bragg Institute, Lucas Heights, New South Wales 2234 (Australia)
Publication Date:
OSTI Identifier:
22594294
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 10; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETISM; DESIGN; IRON; MAGNETIC MATERIALS; MAGNETIZATION; MANGANATES; NEUTRON DIFFRACTION; OXIDES; POWDERS; SPIN; TEMPERATURE DEPENDENCE; YTTERBIUM COMPOUNDS

Citation Formats

Hong, Fang, Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Rd. Pudong, Shanghai 201203, The Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, MS 80R0114, Berkeley, California 94720, Yue, Binbin, E-mail: yuebb@hpstar.ac.cn, E-mail: cheng@uow.edu.au, The Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, MS 80R0114, Berkeley, California 94720, Wang, Jianli, The Australian Nuclear Science and Technology Organization, Studer, Andrew, Fang, Chunsheng, Wang, Xiaolin, Dou, Shixue, and Cheng, Zhenxiang, E-mail: yuebb@hpstar.ac.cn, E-mail: cheng@uow.edu.au. Collapse and reappearance of magnetic orderings in spin frustrated TbMnO{sub 3} induced by Fe substitution. United States: N. p., 2016. Web. doi:10.1063/1.4962465.
Hong, Fang, Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Rd. Pudong, Shanghai 201203, The Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, MS 80R0114, Berkeley, California 94720, Yue, Binbin, E-mail: yuebb@hpstar.ac.cn, E-mail: cheng@uow.edu.au, The Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, MS 80R0114, Berkeley, California 94720, Wang, Jianli, The Australian Nuclear Science and Technology Organization, Studer, Andrew, Fang, Chunsheng, Wang, Xiaolin, Dou, Shixue, & Cheng, Zhenxiang, E-mail: yuebb@hpstar.ac.cn, E-mail: cheng@uow.edu.au. Collapse and reappearance of magnetic orderings in spin frustrated TbMnO{sub 3} induced by Fe substitution. United States. doi:10.1063/1.4962465.
Hong, Fang, Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Rd. Pudong, Shanghai 201203, The Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, MS 80R0114, Berkeley, California 94720, Yue, Binbin, E-mail: yuebb@hpstar.ac.cn, E-mail: cheng@uow.edu.au, The Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, MS 80R0114, Berkeley, California 94720, Wang, Jianli, The Australian Nuclear Science and Technology Organization, Studer, Andrew, Fang, Chunsheng, Wang, Xiaolin, Dou, Shixue, and Cheng, Zhenxiang, E-mail: yuebb@hpstar.ac.cn, E-mail: cheng@uow.edu.au. 2016. "Collapse and reappearance of magnetic orderings in spin frustrated TbMnO{sub 3} induced by Fe substitution". United States. doi:10.1063/1.4962465.
@article{osti_22594294,
title = {Collapse and reappearance of magnetic orderings in spin frustrated TbMnO{sub 3} induced by Fe substitution},
author = {Hong, Fang and Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Rd. Pudong, Shanghai 201203 and The Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, MS 80R0114, Berkeley, California 94720 and Yue, Binbin, E-mail: yuebb@hpstar.ac.cn, E-mail: cheng@uow.edu.au and The Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, MS 80R0114, Berkeley, California 94720 and Wang, Jianli and The Australian Nuclear Science and Technology Organization and Studer, Andrew and Fang, Chunsheng and Wang, Xiaolin and Dou, Shixue and Cheng, Zhenxiang, E-mail: yuebb@hpstar.ac.cn, E-mail: cheng@uow.edu.au},
abstractNote = {We studied the temperature dependent magnetic phase evolution in spin frustrated TbMnO{sub 3} affected by Fe doping via powder neutron diffraction. With the introduction of Fe (10% and 20%), the long range incommensurate magnetic orderings collapse. When the Fe content is increased to 30%, a long-range antiferromagnetic ordering develops, while a spin reorientation transition is found near 35 K from a canted G-type antiferromagnetic ordering to a collinear G-type antiferromagnetic ordering. This work demonstrates the complex magnetic interactions existing in transition metal oxides, which helps to understand the frustrated spin states in other similar systems and design magnetic materials as well.},
doi = {10.1063/1.4962465},
journal = {Applied Physics Letters},
number = 10,
volume = 109,
place = {United States},
year = 2016,
month = 9
}
  • We report on diffraction measurements on multiferroic TbMnO{sub 3} which demonstrate that the Tb- and Mn-magnetic orders are coupled below the ferroelectric transition T{sub FE}=28 K. For T<T{sub FE} the magnetic propagation vectors ({tau}) for Tb and Mn are locked so that {tau}{sup Tb}={tau}{sup Mn}, while below T{sub N}{sup Tb}=7 K we find that {tau}{sup Tb} and {tau}{sup Mn} lock-in to rational values of (3/7)b* and (2/7)b*, respectively, and obey the relation 3{tau}{sup Tb}-{tau}{sup Mn}=1. We explain this novel matching of wave vectors within the frustrated anisotropic next-nearest-neighbor Ising model coupled to a periodic external field produced by the Mn-spinmore » order. The {tau}{sup Tb}={tau}{sup Mn} behavior is recovered when Tb magnetization is small, while the {tau}{sup Tb}=(3/7) regime is stabilized at low temperatures by a peculiar arrangement of domain walls in the ordered state of Ising-like Tb spins.« less
  • No abstract prepared.
  • We report the magnetic properties, of nano-crystalline powders Tb{sub 1−x}Y{sub x}MnO{sub 3} (x = 0, 0.1, 0.2, 0.3 and 0.4), as perceived by neutron diffraction, and elucidate the effect of Tb site substitution on the magnetic structure of TbMnO{sub 3}. All samples crystallized in the orthorhombic structure conforming to space group Pnma, and exhibited an incommensurate collinear antiferromagnetic ordering of the Mn ions below ∼40 K. Furthermore, at T ≤ 20 K, all these samples showed a change in magnetic structure (of Mn moments) to a spiral ordering down to 2 K, the lowest measured temperature. For the samples with x = 0, 0.1, and 0.2, a short-ranged twomore » dimensional (2D) ordering of Tb moments was also observed at 2 K. However, for the other samples (x = 0.3 and 0.4), no magnetic ordering of Tb moments was found down to 2 K. So with Y substitution, a crossover from 2D ordering to a disordering of Tb moments was observed. The moments at the Mn site were found to be lower than the full Mn{sup 3+} (4μ{sub B}) moment for all the samples below 40 K. The magnetic properties of all the samples studied by us in nano form are more pronounced than those of the reported single crystals of same compositions [V. Yu. Ivanov et al., JETP Lett. 91, 392–397 (2010)].« less
  • Cited by 12
  • Single-phase material of the solid solution PbFe{sub x}V{sub 6-x}O{sub 11} was prepared by solid-state reaction over the range 1 {le} x {le} 1.75. Powder preparations of PbV{sub 6}O{sub 11}, however, were always accompanied by a small amount of impurity. The noncentrosymmetric space group P6{sub 3}mc of PbV{sub 6}O{sub 11}, which has an R-block structure, remains unchanged with iron substitution. The crystal structure, remains unchanged with iron substitution. The crystal structure of PbFe{sub 1.75}V{sub 4.25}O{sub 11} was refined from single-crystal X-ray data to R = 0.049. The iron atoms are located preferentially in specific crystallographic sites. The triangular-bipyramidal site is completelymore » occupied by Fe{sup 3+} while the interstices of the central octahedral layer are solely occupied by the vanadium V(1) atoms. The other two crystallographic sites have mixed Fe/V occupancies. Magnetic measurements performed on nearly single-phase PbV{sub 6}O{sub 11} and the iron substituted phases reveal a spin-glass-type behavior with freezing temperatures T{sub f} of 50 and 65 K, respectively. T{sub f} is independent of the iron ratio. This spin-disordered system is attributed to strong frustration occurring in the a-b plane because of the existence of V(1) trimers providing alternatively long and short V-V distances along the a axis. Resistance and Seebeck coefficient measurements indicate p-type conduction above T{sub f} while the system becomes an insulator below T{sub f}. Fe{sup 3+} ions do not participate in the hopping process, and they block conduction parallel to the c axis because of their location in the bridging dimeric octahedral and bipyramidal sites.« less