Xuan Liang, Kazunari Yamaura and Alexei A. Belik*,
{"title":"M = Mn和Zn时a位柱状四重钙钛矿Ce2MnM(Mn2Sb2)O12的负磁化现象","authors":"Xuan Liang, Kazunari Yamaura and Alexei A. Belik*, ","doi":"10.1021/acs.inorgchem.5c0065310.1021/acs.inorgchem.5c00653","DOIUrl":null,"url":null,"abstract":"<p >A phenomenon of magnetization reversal in response to an applied magnetic field is very common and forms the basis of magnetic memories. In contrast, the phenomenon of magnetization reversal in response to a temperature change is rarer. In this work, we demonstrated a pronounced negative magnetization effect (NME) during field-cooled measurements in small magnetic fields in members of the A-site columnar-ordered quadruple perovskites, Ce<sub>2</sub>MnM(Mn<sub>2</sub>Sb<sub>2</sub>)O<sub>12</sub> with M = Mn and Zn, which were prepared by a high-pressure, high-temperature method at about 6 GPa and about 1600 K. Their crystal structures at room temperature were investigated with synchrotron X-ray powder diffraction data. Both compounds crystallize in space group <i>P</i>4<sub>2</sub>/<i>n</i> (No. 86) with full rock-salt ordering of Mn and Sb at the B sites. Lattice parameters are <i>a</i> = 7.84545(1) and <i>c</i> = 7.95529(2) Å for M = Mn and <i>a</i> = 7.81270(1) and <i>c</i> = 7.94100(1) Å for M = Zn. The bond-valence sum analysis and the charge balance suggest that cerium is present in the oxidation state of +3. They show one magnetic transition at <i>T</i><sub>C</sub> = 52 K with the compensation point near 20 K for M = Mn, and at <i>T</i><sub>C</sub> = 34 K with the compensation point near 29 K for M = Zn. A robust, intrinsic NME was also observed on zero-field-cooled curves when measured in small magnetic fields. The NME could originate from its ferrimagnetic structures.</p><p >Two A-site columnar-ordered perovskites, Ce<sub>2</sub>MnM(Mn<sub>2</sub>Sb<sub>2</sub>)O<sub>12</sub> (M = Mn and Zn), were prepared at high pressure of 6 GPa and their structural and magnetic properties are reported. They have A-site cation and B-site cation orders. They show ferrimagnetic properties and the negative magnetization effect.</p>","PeriodicalId":40,"journal":{"name":"Inorganic Chemistry","volume":"64 21","pages":"10467–10477 10467–10477"},"PeriodicalIF":4.7000,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.inorgchem.5c00653","citationCount":"0","resultStr":"{\"title\":\"Negative Magnetization Phenomena in A-Site Columnar-Ordered Quadruple Perovskites Ce2MnM(Mn2Sb2)O12 with M = Mn and Zn\",\"authors\":\"Xuan Liang, Kazunari Yamaura and Alexei A. Belik*, \",\"doi\":\"10.1021/acs.inorgchem.5c0065310.1021/acs.inorgchem.5c00653\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >A phenomenon of magnetization reversal in response to an applied magnetic field is very common and forms the basis of magnetic memories. In contrast, the phenomenon of magnetization reversal in response to a temperature change is rarer. In this work, we demonstrated a pronounced negative magnetization effect (NME) during field-cooled measurements in small magnetic fields in members of the A-site columnar-ordered quadruple perovskites, Ce<sub>2</sub>MnM(Mn<sub>2</sub>Sb<sub>2</sub>)O<sub>12</sub> with M = Mn and Zn, which were prepared by a high-pressure, high-temperature method at about 6 GPa and about 1600 K. Their crystal structures at room temperature were investigated with synchrotron X-ray powder diffraction data. Both compounds crystallize in space group <i>P</i>4<sub>2</sub>/<i>n</i> (No. 86) with full rock-salt ordering of Mn and Sb at the B sites. Lattice parameters are <i>a</i> = 7.84545(1) and <i>c</i> = 7.95529(2) Å for M = Mn and <i>a</i> = 7.81270(1) and <i>c</i> = 7.94100(1) Å for M = Zn. The bond-valence sum analysis and the charge balance suggest that cerium is present in the oxidation state of +3. They show one magnetic transition at <i>T</i><sub>C</sub> = 52 K with the compensation point near 20 K for M = Mn, and at <i>T</i><sub>C</sub> = 34 K with the compensation point near 29 K for M = Zn. A robust, intrinsic NME was also observed on zero-field-cooled curves when measured in small magnetic fields. The NME could originate from its ferrimagnetic structures.</p><p >Two A-site columnar-ordered perovskites, Ce<sub>2</sub>MnM(Mn<sub>2</sub>Sb<sub>2</sub>)O<sub>12</sub> (M = Mn and Zn), were prepared at high pressure of 6 GPa and their structural and magnetic properties are reported. They have A-site cation and B-site cation orders. 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Negative Magnetization Phenomena in A-Site Columnar-Ordered Quadruple Perovskites Ce2MnM(Mn2Sb2)O12 with M = Mn and Zn
A phenomenon of magnetization reversal in response to an applied magnetic field is very common and forms the basis of magnetic memories. In contrast, the phenomenon of magnetization reversal in response to a temperature change is rarer. In this work, we demonstrated a pronounced negative magnetization effect (NME) during field-cooled measurements in small magnetic fields in members of the A-site columnar-ordered quadruple perovskites, Ce2MnM(Mn2Sb2)O12 with M = Mn and Zn, which were prepared by a high-pressure, high-temperature method at about 6 GPa and about 1600 K. Their crystal structures at room temperature were investigated with synchrotron X-ray powder diffraction data. Both compounds crystallize in space group P42/n (No. 86) with full rock-salt ordering of Mn and Sb at the B sites. Lattice parameters are a = 7.84545(1) and c = 7.95529(2) Å for M = Mn and a = 7.81270(1) and c = 7.94100(1) Å for M = Zn. The bond-valence sum analysis and the charge balance suggest that cerium is present in the oxidation state of +3. They show one magnetic transition at TC = 52 K with the compensation point near 20 K for M = Mn, and at TC = 34 K with the compensation point near 29 K for M = Zn. A robust, intrinsic NME was also observed on zero-field-cooled curves when measured in small magnetic fields. The NME could originate from its ferrimagnetic structures.
Two A-site columnar-ordered perovskites, Ce2MnM(Mn2Sb2)O12 (M = Mn and Zn), were prepared at high pressure of 6 GPa and their structural and magnetic properties are reported. They have A-site cation and B-site cation orders. They show ferrimagnetic properties and the negative magnetization effect.
期刊介绍：
Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.
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