What's more, it is an explanation of one phenomenon with another: part of the reason why civic engagement has declined over the last several decades is because people are watching more television. The relationship is an inverse one - as one goes up, the other goes down. In this case, the concepts are civic engagement and television watching. This element of Putnam's theory clearly illustrates the basic purpose of sociological theory: it proposes a relationship between two or more concepts. The more television people watch, the lower their involvement in civic life will be. While there are a number of factors that contribute to this decline (Putnam's theory is quite complex), one of the prominent factors is the increased consumption of television as a form entertainment. Putnam found that Americans' involvement in civic life (e.g., community organizations, clubs, voting, religious participation, etc.) has declined over the last 40 to 60 years. An example of a sociological theory is the work of Robert Putnam on the decline of civic engagement. In other words, a theory is an explanation for why or how a phenomenon occurs. A theory is a proposed relationship between two or more concepts. Sociologists develop theories to explain social phenomena. 6.4 Black Feminist Thought and Queer Feminism.6.3 Radical, Separatist, and Cultural Feminism. The insights revealed here not only deepen our understanding of the electronic properties and structural and magnetic ordering transition under high pressure of square lattice antiferromagnets AMoOPO4Cl (A = K, Rb), but also push the boundaries of knowledge by recognizing the role of nonmagnetic ions P 3s in magnetic exchange coupling. The loss of mirror plane symmetry in P4/n phase, makes the P 3s orbitals activate to participate the magnetic interaction, giving rise to competitive ferromagnetic superexchange interaction, in addition to antiferromagnetic direct one, and consequently initiating the magnetic ordering transition. Furthermore, the mechanism underlined responsible for the magnetic ordering transition at high pressure has been disclosed in terms of density of states and spin density isosurface analysis across the transition. More importantly, the P4/n phase, involving the mutually twisting of MoO5Cl and PO4 polyhedra, satisfactorily reproduces the experimentally observed structural transition and the subsequent magnetic ordering transition from columnar antiferromagnetic ordering to NĂ©el antiferromagnetic one, identified to be the appropriate high pressure structure. Our results indicated that the columnar antiferromagnetic ordering, experimentally determined, is the magnetic ground state of the ambient P4/nmm phase, stabilized by the predominant antiferromagnetic next nearest neighbor interaction J2 in the diagonal directions of square lattice, regardless of the effective Hubbard amendment values. By means of ab initio density functional theory calculations with taking electronic correlation and van der Waals force into account, we conduct a comprehensive studies of electronic and magnetic properties, as well as structural and magnetic ordering evolution under pressure of the square lattice antiferromagnets AMoOPO4Cl (A = K, Rb) containing Mo5+ ions with, the potential candidates for achieving quantum phases theoretically predicted, existing in the boundary regimes for spin-J1 -J2 square lattice magnets.
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