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Related Concept Videos

Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

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An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
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Lattice Centering and Coordination Number02:33

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The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
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Sternberg's Triangular Theory of Love02:15

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We typically love the people with whom we form relationships, but the type of love we have for our family, friends, and lovers differs. Robert Sternberg (1986) proposed that there are three components of love: intimacy, passion, and commitment. These three components form a triangle that defines multiple types of love: this is known as Sternberg’s triangular theory of love. Intimacy is the sharing of details and intimate thoughts and emotions. Passion is the physical attraction—the...
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Bewley Lattice Diagram01:12

Bewley Lattice Diagram

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The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
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The Looking Glass Self01:28

The Looking Glass Self

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The concept of the looking-glass self describes how an individual's self-concept is shaped by their perception of how others see them. This psychological theory, first introduced by sociologist Charles Horton Cooley in 1902, posits that self-identity emerges in a social context and is influenced by the judgments—real or imagined—of others.Research suggests that individuals frequently overestimate how positively others perceive them. This is particularly evident in physical...
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Rectangular and Triangular Pulse Function01:19

Rectangular and Triangular Pulse Function

2.0K
The unit rectangular pulse function is mathematically represented by a rectangular function centered at the origin with a height of one unit. This function is defined by two parameters: T, which specifies the center location of the pulse along the time axis, and τ, which determines the pulse duration.
For example, consider a rectangular pulse with a 5V amplitude, a 3-second duration, and centered at t=2 seconds. This pulse can be expressed using the rectangular function, written as,
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Updated: Feb 13, 2026

Measuring the Spin-Lattice Relaxation Magnetic Field Dependence of Hyperpolarized [1-13C]pyruvate
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Measuring the Spin-Lattice Relaxation Magnetic Field Dependence of Hyperpolarized [1-13C]pyruvate

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Spin-Glass Ground State in a Triangular-Lattice Compound YbZnGaO_{4}.

Zhen Ma1, Jinghui Wang1, Zhao-Yang Dong1

  • 1National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.

Physical Review Letters
|March 16, 2018
PubMed
Summary
This summary is machine-generated.

The YbZnGa_{4} material exhibits a spin glass ground state, characterized by a lack of magnetic order. Ultralow-temperature measurements confirm this spin-glass behavior, suggesting disorder and frustration are key factors.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Magnetism

Background:

  • Triangular lattice materials are candidates for exotic magnetic states.
  • Yb-based compounds are of interest due to strong spin-orbit coupling.

Purpose of the Study:

  • To determine the ground state of YbZnGa_{4}.
  • To investigate the magnetic properties of triangular lattice Yb compounds.

Main Methods:

  • Ultralow-temperature AC susceptibility measurements.
  • Analysis of magnetic excitation continua.
  • Thermal conductivity measurements.

Main Results:

  • YbZnGa_{4} exhibits no long-range magnetic order, characteristic of a spin glass.
  • Frequency-dependent peaks in AC susceptibility at ~0.1 K confirm the spin-glass ground state.
  • Similar spin freezing observed in YbMgGa_{4} supports the findings.

Conclusions:

  • The ground state of YbZnGa_{4} is a spin glass.
  • Disorder and frustration are identified as the primary drivers of the spin-glass phase.
  • The findings are applicable to related Yb-based triangular lattice compounds.