Review of the magnetocaloric effect in manganite materials

Phan, Manh‐Huong; Yu, Seong‐Cho

doi:10.1016/j.jmmm.2006.07.025

Cited by 1,704 publications

(754 citation statements)

References 78 publications

(187 reference statements)

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“…More importantly, this maximum of ∆S is actually comparable to the best values reported in manganites around room temperature [5]. The same is true when considering ∆T ad , even though there are much less data in the literature about this parameter.…”

Section: Comments Regarding Applications In Mrsupporting

confidence: 83%

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Development of a new magnetocaloric material used in a magnetic refrigeration device

Guillou

Legait

Kedous‐Lebouc

et al. 2012

EPJ Web of Conferences

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Abstract. Testing directly a magnetocaloric material in a magnetic refrigeration (MR) system is the best way to judge of its applicative potentialities. In this spirit, an oxide expected to show promising magnetocaloric properties around room temperature (Pr 0.65 Sr 0.35 MnO 3 ) was produced in large scale and shaped in order to build a regenerator. Magnetization, heat capacity, resistivity, thermal conductivity and a direct test in a MR device were carried out on this manganite. The results were compared to those observed in the reference material which is Gadolinium. The two main conclusions of these preliminary results are: (i) the Pr 0.65 Sr 0.35 MnO 3 actually displays not only a significant magnetocaloric effect but also a real refrigeration capability at room temperature; (ii) the temperature spans reached in these first experiments are even found to well compare with those obtained with Gd.

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Section: Comments Regarding Applications In Mrsupporting

confidence: 83%

“…The most studied compounds were the La 1-x (Ca, Sr) x MnO 3 with x ≈ 1/3. This series is generally regarded as the archetypical example of magnetocaloric oxides at RT [4,5]. However, there are other systems leading to similar performances that can also be considered.…”

Section: Introductionmentioning

confidence: 99%

Development of a new magnetocaloric material used in a magnetic refrigeration device

Guillou

Legait

Kedous‐Lebouc

et al. 2012

EPJ Web of Conferences

View full text Add to dashboard Cite

show abstract

“…An ideal magnetic refrigerant material has to possess large values of both ∆S M and ∆T ad as well as high RCP around room temperature at a low magnetic field [9]. The RCP is actually considered to be the most important factor for assessing the usefulness of magnetic refrigerant material [10,11]. The investigation of the −∆S M is one of the method which allows one to obtain information about the magnetic phase transition in these materials as well as to assess the MCE.…”

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Studies of the Fe-Co-Zr-Mo-W-B Amorphous Alloy

et al. 2017

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The paper presents a characterization of the phase structure by X-ray diffraction and isothermal magnetic entropy changes for the amorphous Fe58Co10Zr10Mo5W2B15 alloy sample in the as-quenched state. An ingot sample was obtained by arc-melting. The ribbon sample was obtained by the melt-spinning technique. The magnetic measurements at various temperatures allowed for the study of the Curie temperature TC and magnetic entropy changes |∆SM |. In order to determine the Curie temperature TC of amorphous phase, three independent methods were used. Determination of the Curie temperature TC for the amorphous alloys is not a trivial problem, as magnetization does not decreases rapidly around TC. Therefore it is essential issue to establish TC using few complementary methods. X-ray diffraction analysis revealed a fully amorphous structure of the ribbon samples.

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“…3 First gaining attention in the 1950s, 4 manganites continue to excite interest in the scientific community from the standpoint of both application and basic understanding. 5 The push for energy-efficient magnetic refrigeration based on MCE has gained momentum in recent years, fueling further research into complex magnetic oxides.…”

Section: Introductionmentioning

confidence: 99%

Impact of nanostructuring on the magnetic and magnetocaloric properties of microscale phase-separated La5/8−yPryCa
Bingham
¹
,
Lampen
²
,
Phan
³

et al. 2012
Phys. Rev. B

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Bulk manganites of the form La 5/8-y Pr y Ca 3/8 MnO 3 (LPCMO) exhibit a complex phase diagram due to coexisting charge-ordered antiferromagnetic (CO/AFM), charge disordered paramagnetic (PM), and ferromagnetic (FM) phases. Because phase separation in LPCMO occurs on the microscale, reducing particle size to below this characteristic length is expected to have a strong impact on the magnetic properties of the system. Though a comparative study of the magnetic and magnetocaloric properties of single crystalline (bulk) and nanocrystalline LPCMO (y = 3/8) we show that the AFM, CO, and FM transitions seen in the single crystal can also be observed in the large particle sizes (400 nm and 150 nm), while only a single PM to FM transition is found for the small particles (55 nm). Magnetic and magnetocaloric measurements reveal that decreasing particle size affects the balance of competing phases in LPCMO and narrows the range of fields over which PM, FM, and CO phases coexist. The FM volume fraction increases with size reduction, until CO is suppressed below some critical size, ~100 nm. With size reduction, the saturation magnetization and field sensitivity first increase as long-range CO is inhibited, then decrease as surface effects become increasingly important. The trend that the FM phase is stabilized on the nanoscale is contrasted with the stabilization of the charge-disordered PM phase occurring on the microscale, demonstrating that 2 in terms of the characteristic phase separation length, a few microns and several hundred nanometers represent very different regimes in LPCMO. PACS: 75.30.Vn

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Review of the magnetocaloric effect in manganite materials

Cited by 1,704 publications

References 78 publications

Development of a new magnetocaloric material used in a magnetic refrigeration device

Development of a new magnetocaloric material used in a magnetic refrigeration device

Structural and Magnetic Studies of the Fe-Co-Zr-Mo-W-B Amorphous Alloy

Impact of nanostructuring on the magnetic and magnetocaloric properties of microscale phase-separated La5/8−yPryCa
Bingham
¹
,
Lampen
²
,
Phan
³

et al. 2012
Phys. Rev. B

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Review of the magnetocaloric effect in manganite materials

Cited by 1,704 publications

References 78 publications

Development of a new magnetocaloric material used in a magnetic refrigeration device

Development of a new magnetocaloric material used in a magnetic refrigeration device

Structural and Magnetic Studies of the Fe-Co-Zr-Mo-W-B Amorphous Alloy

Impact of nanostructuring on the magnetic and magnetocaloric properties of microscale phase-separated La5/8−yPryCaBingham1, Lampen2, Phan3 et al. 2012Phys. Rev. B

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Impact of nanostructuring on the magnetic and magnetocaloric properties of microscale phase-separated La5/8−yPryCa
Bingham
¹
,
Lampen
²
,
Phan
³

et al. 2012
Phys. Rev. B