{"title":"Tb–Co–In system at 870 K and magnetic ordering of Tb2CoIn8, Tb23Co7In20, Tb26Co5In12 and Tb6Co2In","authors":"Haifeng Chen , Jinlei Yao , A.V. Garshev , V.O. Yapaskurt , A.V. Morozkin","doi":"10.1016/j.jssc.2024.125089","DOIUrl":null,"url":null,"abstract":"<div><div>The Tb–Co–In system at 870 K has been investigated by X-ray powder diffraction and microprobe elemental analyses. The existence of the known compounds TbCo<sub>2</sub>In (PrCo<sub>2</sub>Ga-type), Tb<sub>2</sub>CoIn<sub>8</sub> (Ho<sub>2</sub>CoGa<sub>8</sub>-type), Tb<sub>11</sub>Co<sub>4</sub>In<sub>9</sub> (Nd<sub>11</sub>Pd<sub>4</sub>In<sub>9</sub>-type), Tb<sub>23</sub>Co<sub>7</sub>In<sub>20</sub> (Er<sub>23</sub>Co<sub>6.7</sub>In<sub>20.3</sub>-type), Tb<sub>6</sub>Co<sub>2</sub>In (Ho<sub>6</sub>Co<sub>2</sub>Ga-type) and Tb<sub>14</sub>Co<sub>3</sub>In<sub>3</sub> (Gd<sub>14</sub>Co<sub>3</sub>In<sub>2.7</sub>-type) has been confirmed and novel Sm<sub>26</sub>Co<sub>11</sub>Ga<sub>6</sub>-type Tb<sub>26</sub>Co<sub>5</sub>–<sub>6</sub>In<sub>12-11</sub> (space group <em>P</em>4/<em>mbm</em>, N 127, <em>tP</em>86), ∼Tb<sub>18</sub>Co<sub>67</sub>In<sub>15</sub>, ∼Tb<sub>5</sub>Co<sub>3</sub>In<sub>2</sub> (unknown structure) and qusibinary PuNi<sub>3</sub>-type Tb<sub>1-0.74</sub>Co<sub>3</sub>In<sub>0-0.26</sub> have been detected in the Tb–Co–In system at 870 K. The appreciable solubility of other binaries was no observed in the Tb–Co–In system.</div><div>The Ho<sub>2</sub>CoGa<sub>8</sub>-type Tb<sub>2</sub>CoIn<sub>8</sub> shows antiferromagnetic ordering at <em>T</em><sub>N</sub> = 32 K with field-sensitive paramagnetic state and the Sm<sub>26</sub>Co<sub>11</sub>Ga<sub>6</sub>-type Tb<sub>26</sub>Co<sub>5</sub>In<sub>12</sub> exhibits the Curie temperature (<em>T</em><sub>C</sub>) at 72 K. The Er<sub>23</sub>Co<sub>6.7</sub>In<sub>20.3</sub>-type Tb<sub>23</sub>Co<sub>7</sub>In<sub>20</sub> ferromagnet with <em>T</em><sub>C</sub> = 56 K and <em>T</em><sub>m</sub> ∼28 K in a field of 10 kOe and it shows hard magnetic properties at low temperatures. The Ho<sub>6</sub>Co<sub>2</sub>Ga-type Tb<sub>6</sub>Co<sub>2</sub>In shows field-sensitive ferro-antiferromagnetic ordering below 75 K.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"341 ","pages":"Article 125089"},"PeriodicalIF":3.2000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Solid State Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022459624005437","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
The Tb–Co–In system at 870 K has been investigated by X-ray powder diffraction and microprobe elemental analyses. The existence of the known compounds TbCo2In (PrCo2Ga-type), Tb2CoIn8 (Ho2CoGa8-type), Tb11Co4In9 (Nd11Pd4In9-type), Tb23Co7In20 (Er23Co6.7In20.3-type), Tb6Co2In (Ho6Co2Ga-type) and Tb14Co3In3 (Gd14Co3In2.7-type) has been confirmed and novel Sm26Co11Ga6-type Tb26Co5–6In12-11 (space group P4/mbm, N 127, tP86), ∼Tb18Co67In15, ∼Tb5Co3In2 (unknown structure) and qusibinary PuNi3-type Tb1-0.74Co3In0-0.26 have been detected in the Tb–Co–In system at 870 K. The appreciable solubility of other binaries was no observed in the Tb–Co–In system.
The Ho2CoGa8-type Tb2CoIn8 shows antiferromagnetic ordering at TN = 32 K with field-sensitive paramagnetic state and the Sm26Co11Ga6-type Tb26Co5In12 exhibits the Curie temperature (TC) at 72 K. The Er23Co6.7In20.3-type Tb23Co7In20 ferromagnet with TC = 56 K and Tm ∼28 K in a field of 10 kOe and it shows hard magnetic properties at low temperatures. The Ho6Co2Ga-type Tb6Co2In shows field-sensitive ferro-antiferromagnetic ordering below 75 K.
期刊介绍:
Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.