First-order magneto-structural transition and magnetocaloric effect in Mn(Co0.96Fe0.04)Ge

Ren, Qingyong; Hutchison, W. D.; Wang, Jianli; Studer, Andrew J.; Campbell, S. J.

doi:10.1016/j.jallcom.2016.09.169

Cited by 31 publications

(12 citation statements)

References 47 publications

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“…Comparing the peak values, it is found that TbCo 2 has the largest − S max value of 6.0 J kg −1 K −1 followed by 3.2 J kg −1 K −1 , 2.83 J kg −1 K −1 , and 2.74 J kg −1 K −1 for TbCo 2 Mn 0.1 , TbCo 2 Mn 0.2 , and TbCo 2 Mn 0.3 , respectively. The differences in the magnetic entropy for these compounds reflect that the type of magnetic transition has changed from rescaled temperature ࣸ was specified as follows [18,19]:…”

Section: B Magnetic Phase Transitionmentioning

confidence: 99%

“…However, this first order magnetic phase transition for x = 0 changes to second order after the introduction of Mn. We plotted master curves of the magnetic entropy changes [18,19] to clearly identify the transformation from first order to second order, as well as detailed refinement of diffraction data near the magnetic phase transition temperature to verify the change in crystal structure. Finally, the critical behavior around T C was investigated using the Kouvel-Fisher technique to precisely analyze the nature of the second order transitions for all the TbCo 2 Mn x (x = 0.1, 0.2, and 0.3) compounds.…”

Section: Introductionmentioning

confidence: 99%

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Tuning the magnetic and structural transitions in TbCo2Mnx compounds

et al. 2017

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The wide ranging magnetic behavior in intermetallic compounds continues to attract broad interest. Effective control of their magnetic properties is of great importance for fundamental research and potential applications. In this work the structural and magnetic properties of TbCo2Mnx compounds are studied by a combination of temperature dependent synchrotron x-ray diffraction, neutron powder diffraction, specific heat, and magnetic measurements. Magnetization measurements show that the addition of Mn can modify the magnetic behavior significantly: first, the magnetic transition temperatures increase from ∼227 K to 332 K with x = 0.0 to 0.3; secondly, the nature of the magnetic transitions change from the first order to second order, as identified by three methods (Banerjee criterion, master curves of magnetic entropy changes, and detailed crystal structure analysis through neutron diffraction). Both synchrotron x-ray diffraction and neutron diffraction confirm that a structural transition, from cubic Fd3¯m to rhombohedral R3¯m on cooling, occurred accompanying the magnetic transition. To further clarify the nature of the second order magnetic phase transitions, we have carried out a detailed critical exponent analysis. The derived critical exponents are close to the theoretical prediction from the mean-field model, indicating the magnetic interactions are long range. This work benefits our general understanding of magnetic interactions in intermetallic compounds and provides guidance to design a functional magnetic material for room temperature magnetic devices.

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Section: B Magnetic Phase Transitionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tuning the magnetic and structural transitions in TbCo2Mnx compounds

et al. 2017

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“…Although the key role of hysteresis for reversibility was well established almost one decade ago [9][10][11] , a significant number of studies on caloric effects do not address this issue yet. Promising materials have been declared without revealing the hysteresis width 6,[12][13][14] or reporting hysteresis widths that would entail manifestly excessive fields for a practical implementation 13,[15][16][17] . While these considerations do not invalidate previous works, it is undoubtedly important to have information about such features whenever possible for the purpose of practical applications.…”

Section: Introductionmentioning

confidence: 99%

Reversible and irreversible colossal barocaloric effects in plastic crystals

et al. 2020

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“…Li et al [8] have performed a study of both Mn and Co substitution by Fe, and in spite of different chemical and physical properties of these two atoms, both magnetic and structural properties of the compounds were comparable. Ren et al [23] have reported that a 4 at.% substitution of Fe for Co in MnCoGe is sufficient to tune the magnetostructural transition at 299 K, leading to maximum magnetic entropy change (-ΔS M ) of 11 J.Kg -1 K -1 for a magnetic field change (ΔH) = 5 T. Aryal et al [24] obtained a first-order magnetostructural transition in Mn 1-…”

Section: Introductionmentioning

confidence: 99%

Comparative phase transformation and magnetocaloric effect study of Co and Mn substitution by Cu in MnCoGe compounds

Pal

Frommen

Kumar

et al. 2019

Journal of Alloys and Compounds

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In main text, a section of Keywords should be complemented and inserted between the sections ABSTRACT and Introduction. Please be informed that in each keyword the first word should begin with a capital letter and the others should be in lowercase letters. Response: Keywords have been added in proper format. 3 Each section from Introduction to Conclusions should be numbered in sequence by Arabic numerals. Response: Sections have been numbered. 4 In main text and Captions, all "Figure" should be abbreviated into "Fig.". Response: "Figure" has been changed to "Fig". 5 The style of Table can not meet our publication requirements. In the Table all the vertical lines should be deleted and all the parallel lines, except the parallel lines 1, 2 and the last one, should be removed. You also can refer to our published papers. Response: The style has been corrected to proper format. 6 The subtitle "REFERENCES:" should be revised into "References". Response: "REFERENCES:" has been revised into "References". 7 In the section of References, all authors of cited paper should be listed instead of et al, and page span of cited paper should be provied. Response: All authors have been included in the references and page span has been also included. 8. Numerous relevant papers have been published in recent years especially in 2017 and 2018. Some key, important or/and latest research results in this field should be mentioned and cited in the section of introduction instead of outdated or earlier papers so that we can provide a solid background and progress to the readers regarding the current state-of-knowledge on this topic. Therefore, I strongly require you to rewrite this part and then update your citations, or it is very hard for me to accept your manuscript.

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First-order magneto-structural transition and magnetocaloric effect in Mn(Co0.96Fe0.04)Ge

Cited by 31 publications

References 47 publications

Tuning the magnetic and structural transitions in TbCo2Mnx compounds

Tuning the magnetic and structural transitions in TbCo2Mnx compounds

Reversible and irreversible colossal barocaloric effects in plastic crystals

Comparative phase transformation and magnetocaloric effect study of Co and Mn substitution by Cu in MnCoGe compounds

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