| 摘要: |
| 通过固相反应法制备了具有钙钛矿结构的La1-xBaxCrO3 (0 ≤ x ≤ 0.3)多晶样品，利用X射线衍射对其晶体结构进行表征，并对X射线衍射数据进行了精修，获得了La1-xBaxCrO3系列样品的晶体结构数据，测量了所有样品在低温下的磁化强度和电阻率，随着Ba含量的增加，反铁磁转变温度降低，在反铁磁转变温度以下，反铁磁性与铁磁性共存，La1-xBaxCrO3在低温下的电阻率表现出半导体特性，随Ba含量的增加电阻率降低。 |
| 关键词: LaCrO3，钙钛矿结构，掺杂 |
| DOI： |
| 投稿时间：2023-12-21修订日期：2024-03-04 |
| 基金项目: |
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| Effect of Ba doping on physical properties of LaCrO3* |
|
Yang Fan1, Zhao Yong2, Chen Yongliang1
|
| (1.Southwest Jiaotong University;2.Southwest Jiaotong University，Fujian Normal University) |
| Abstract: |
| Polycrystalline La1-xBaxCrO3 (0 ≤ x ≤ 0.3) samples with perovskite structure have been synthesized in air via a solid-state reaction method. Their crystal structure was investigated by X-ray diffraction and all of X-ray diffraction data was refined. The detail structural parameters of La1-xBaxCrO3 were summarized. DC magnetization and resistivity at low temperature were measured. The antiferromagnetic transition temperature was continuously suppressed with increasing Ba content and antiferromagnetism and ferromagnetism coexist in La1-xBaxCrO3 samples below antiferromagnetic transition temperature. The resistivity at low temperature showed semiconductor characteristics and decreased with the increase of Ba content. |
| Key words: LaCrO3, Perovskite structure, Doping |