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[求助]
磁性測量表征的一段英語翻譯成漢語
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| The magnetic susceptibility of compound 5 versus temperature is shown in Figure 8, the χMT value at 300K is 13.59 cm3 mol-1 K, it is close to the value expected for three Mn(II) (S = 5/2) noninteracting ions (13.125 cm3 mol-1 K, g = 2). This is corroborated by the continuous decrease of χMT upon cooling down to 11.96 cm3 mol-1 K at 80K. Below that temperature, the decrease is more abrupt, with χMT reaching a value of 4.47 cm3 mol-1 K at 2K, which is close to the spin - only (g = 2) value of 4.375 cm3 mol-1 K for a spin ground state S = 5/2. Additionally, a decrease in the low temperature χMT (T) data could also arise from zero-field splitting of the 6A1g ground state imposed by a distortion of the Mn2+ octahedron. The magnetic susceptibility above 10 K obeys the Curie-Weiss law with the Weiss constant, θ = -12.19 K, and Curie constant, C = 14.03 cm3 mol-1 K per Mn3 unit. The negative weiss constants indicate weak antiferromagnetic interactions between the Mn(II) centers. |
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點擊[https://pinyin.cn/1hS5y2xphw6] 查看這張圖片。[訪問驗證碼是:027804請妥善保管] [ 發(fā)自小木蟲客戶端 ] |
| 化合物5隨溫度變化的磁導率見圖8,在300 K的χMT值為13.59 cm3 mol-1 K,接近于三個無相互作用 Mn(II) (S = 5/2) 離子 (13.125 cm3 mol-1 K, g = 2)的磁矩預期值。這與降溫時χMT連續(xù)下降到80K的 11.96 cm3 mol-1 K相互印證。低于80K,下降變得更快,在2K, χMT 為 4.47 cm3 mol-1 K ,接近于純自旋 (g = 2) 值基態(tài) S = 5/2的 4.375 cm3 mol-1 K。另外, χMT (T) 曲線在低溫段的下降也由Mn2+八面體畸變造成的6A1g 基態(tài)零場劈裂引起。10K以上的磁導率服從居里-外斯定律,外斯常數(shù) θ = -12.19 K, 每個 Mn3單元的居里常數(shù)C = 14.03 cm3 mol-1 K。外斯常數(shù)為負,表明Mn(II)中心之間存在弱的反鐵磁作用。 |
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