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Temperature-Induced Irreversible Structural Transition in Fe 1.1 Mn 1.9 O 4 Nanoparticles Synthesized by Combustion Method.

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Title: Temperature-Induced Irreversible Structural Transition in Fe 1.1 Mn 1.9 O 4 Nanoparticles Synthesized by Combustion Method.
Authors: Spivakov, Aleksandr A.1 (AUTHOR), Lin, Chun-Rong1 (AUTHOR) crlinspin@gmail.com, Chen, Ying-Zhen1 (AUTHOR), Huang, Li-Huai1 (AUTHOR)
Source: Nanomaterials (2079-4991). Apr2023, Vol. 13 Issue 7, p1273. 11p.
Subjects: Phase transitions, Magnetic measurements, Combustion, Magnetization measurement, Low temperatures, Ferrimagnetic materials
Abstract: Fe1.1Mn1.9O4 nanoparticles were successfully synthesized using a combustion method. The influence of the heating temperature on the evolution of the structural and magnetic properties has been studied using various methods. The structural analysis results revealed that as-synthesized nanoparticles have a tetragonal structure with an average size of ~24 nm. The magnetic measurements of the sample showed its ferrimagnetic nature at room temperature with hysteresis at low fields. Temperature-dependent magnetization measurements allowed for the conclusion that the Curie temperature for Fe1.1Mn1.9O4 nanoparticles was ~465 °C. After high-temperature magnetic measurements, during which the samples were heated to various maximum heating temperatures (Tmax.heat.) in the range from 500 to 900 °C, it was found that the structure of the samples after cooling to room temperature depended on the heating temperature. Herewith, when the heating temperature was 600 < Tmax.heat. < 700 °C, an irreversible structural phase transition occurred, and the cooled samples retained a high-temperature cubic structure. The results of the magnetic analysis showed that the samples, following high-temperature magnetic measurements, demonstrated ferrimagnetic behavior. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Temperature-Induced Irreversible Structural Transition in Fe 1.1 Mn 1.9 O 4 Nanoparticles Synthesized by Combustion Method.
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  Data: Fe1.1Mn1.9O4 nanoparticles were successfully synthesized using a combustion method. The influence of the heating temperature on the evolution of the structural and magnetic properties has been studied using various methods. The structural analysis results revealed that as-synthesized nanoparticles have a tetragonal structure with an average size of ~24 nm. The magnetic measurements of the sample showed its ferrimagnetic nature at room temperature with hysteresis at low fields. Temperature-dependent magnetization measurements allowed for the conclusion that the Curie temperature for Fe1.1Mn1.9O4 nanoparticles was ~465 &#176;C. After high-temperature magnetic measurements, during which the samples were heated to various maximum heating temperatures (Tmax.heat.) in the range from 500 to 900 &#176;C, it was found that the structure of the samples after cooling to room temperature depended on the heating temperature. Herewith, when the heating temperature was 600 &lt; Tmax.heat. &lt; 700 &#176;C, an irreversible structural phase transition occurred, and the cooled samples retained a high-temperature cubic structure. The results of the magnetic analysis showed that the samples, following high-temperature magnetic measurements, demonstrated ferrimagnetic behavior. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: &lt;i&gt;Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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        Value: 10.3390/nano13071273
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 11
        StartPage: 1273
    Subjects:
      – SubjectFull: Phase transitions
        Type: general
      – SubjectFull: Magnetic measurements
        Type: general
      – SubjectFull: Combustion
        Type: general
      – SubjectFull: Magnetization measurement
        Type: general
      – SubjectFull: Low temperatures
        Type: general
      – SubjectFull: Ferrimagnetic materials
        Type: general
    Titles:
      – TitleFull: Temperature-Induced Irreversible Structural Transition in Fe 1.1 Mn 1.9 O 4 Nanoparticles Synthesized by Combustion Method.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Spivakov, Aleksandr A.
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            NameFull: Lin, Chun-Rong
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            NameFull: Chen, Ying-Zhen
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            NameFull: Huang, Li-Huai
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            – D: 01
              M: 04
              Text: Apr2023
              Type: published
              Y: 2023
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              Value: 13
            – Type: issue
              Value: 7
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            – TitleFull: Nanomaterials (2079-4991)
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